diff --git a/angular.json b/angular.json
index c7a34fbf..ac0b1ea4 100644
--- a/angular.json
+++ b/angular.json
@@ -2191,6 +2191,38 @@
           "style": "scss"
         }
       }
+    },
+    "server-repository-util": {
+      "projectType": "library",
+      "root": "libs/server/repository/util",
+      "sourceRoot": "libs/server/repository/util/src",
+      "prefix": "pimp-my-pr",
+      "architect": {
+        "lint": {
+          "builder": "@angular-devkit/build-angular:tslint",
+          "options": {
+            "tsConfig": [
+              "libs/server/repository/util/tsconfig.lib.json",
+              "libs/server/repository/util/tsconfig.spec.json"
+            ],
+            "exclude": ["**/node_modules/**", "!libs/server/repository/util/**"]
+          }
+        },
+        "test": {
+          "builder": "@nrwl/jest:jest",
+          "options": {
+            "jestConfig": "libs/server/repository/util/jest.config.js",
+            "tsConfig": "libs/server/repository/util/tsconfig.spec.json",
+            "passWithNoTests": true,
+            "setupFile": "libs/server/repository/util/src/test-setup.ts"
+          }
+        }
+      },
+      "schematics": {
+        "@nrwl/angular:component": {
+          "style": "scss"
+        }
+      }
     }
   },
   "cli": {
diff --git a/apps/pmp-api/src/main.ts b/apps/pmp-api/src/main.ts
index d3f24f9d..f6e48319 100644
--- a/apps/pmp-api/src/main.ts
+++ b/apps/pmp-api/src/main.ts
@@ -9,7 +9,9 @@ async function bootstrap(): Promise<void> {
   const globalPrefix = 'api';
 
   app.setGlobalPrefix(globalPrefix);
-  app.useGlobalPipes(new ValidationPipe());
+  app.useGlobalPipes(
+    new ValidationPipe({ transform: true, transformOptions: { enableImplicitConversion: true } })
+  );
 
   const port = process.env.port || 3333;
 
diff --git a/libs/server/repository/api-rest/src/lib/controllers/timeline.controller.ts b/libs/server/repository/api-rest/src/lib/controllers/timeline.controller.ts
new file mode 100644
index 00000000..3fd8502e
--- /dev/null
+++ b/libs/server/repository/api-rest/src/lib/controllers/timeline.controller.ts
@@ -0,0 +1,40 @@
+import { ApiBearerAuth, ApiOkResponse, ApiTags } from '@nestjs/swagger';
+import { Controller, Get, Param, Query, UseGuards, UsePipes, ValidationPipe } from '@nestjs/common';
+import { AuthGuard, Credentials, RequestCredentials } from '@pimp-my-pr/server/auth/public';
+import {
+  GetPrTimelineQuery,
+  PrTimelineReadModel,
+  TimelineFacade
+} from '@pimp-my-pr/server/repository/core/application-services';
+import { GenerateTimelineDto } from '../dtos/generate-timeline.dto';
+import { decreaseDateByTimelineStep } from '@pimp-my-pr/server/repository/util';
+import { TimelineStep } from '@pimp-my-pr/shared/domain';
+
+@ApiTags('timeline')
+@UseGuards(AuthGuard)
+@ApiBearerAuth()
+@Controller('timeline')
+export class TimelineController {
+  constructor(private timelineFacade: TimelineFacade) {}
+
+  @ApiOkResponse({ type: [PrTimelineReadModel] })
+  @Get('pr/:repositoryId')
+  generateTimeline(
+    @Credentials() credentials: RequestCredentials,
+    @Param('repositoryId') repositoryId: string,
+    @Query() query: GenerateTimelineDto
+  ): Promise<PrTimelineReadModel> {
+    return this.timelineFacade.getPrTimeLine(
+      new GetPrTimelineQuery(
+        query.step,
+        query.timelineFrom,
+        query.timelineTo,
+        credentials.token,
+        repositoryId,
+        credentials.platform,
+        // TODO: Find a better solution to handle this problem
+        decreaseDateByTimelineStep(query.timelineFrom, TimelineStep.MONTH, 3)
+      )
+    );
+  }
+}
diff --git a/libs/server/repository/api-rest/src/lib/dtos/generate-timeline.dto.ts b/libs/server/repository/api-rest/src/lib/dtos/generate-timeline.dto.ts
new file mode 100644
index 00000000..b7a0ff91
--- /dev/null
+++ b/libs/server/repository/api-rest/src/lib/dtos/generate-timeline.dto.ts
@@ -0,0 +1,24 @@
+import { ApiProperty } from '@nestjs/swagger';
+import { IsDate, IsIn } from 'class-validator';
+import { Transform } from 'class-transformer';
+import { TimelineStep } from '@pimp-my-pr/shared/domain';
+
+export class GenerateTimelineDto {
+  @ApiProperty({ enum: TimelineStep })
+  @IsIn(Object.values(TimelineStep))
+  step: TimelineStep;
+
+  @ApiProperty({
+    description: 'Beginning of the tracked period - every subsequent record is older'
+  })
+  @IsDate()
+  @Transform(value => new Date(value))
+  timelineFrom: Date;
+
+  @ApiProperty({
+    description: 'Beginning of the tracked period - every subsequent record is older'
+  })
+  @IsDate()
+  @Transform(value => new Date(value))
+  timelineTo: Date;
+}
diff --git a/libs/server/repository/api-rest/src/lib/server-repository-api-rest.module.ts b/libs/server/repository/api-rest/src/lib/server-repository-api-rest.module.ts
index ed645482..2077fd03 100644
--- a/libs/server/repository/api-rest/src/lib/server-repository-api-rest.module.ts
+++ b/libs/server/repository/api-rest/src/lib/server-repository-api-rest.module.ts
@@ -3,10 +3,11 @@ import { ServerRepositoryShellModule } from '@pimp-my-pr/server/repository/shell
 import { RepositoryController } from './controllers/repository.controller';
 import { StatisticsController } from './controllers/statistics.controller';
 import { UserRepositoryGuard } from './guards/user-repository.guard';
+import { TimelineController } from './controllers/timeline.controller';
 
 @Module({
   imports: [ServerRepositoryShellModule],
-  controllers: [RepositoryController, StatisticsController],
+  controllers: [RepositoryController, StatisticsController, TimelineController],
   providers: [UserRepositoryGuard]
 })
 export class ServerRepositoryApiRestModule {}
diff --git a/libs/server/repository/core/application-services/src/index.ts b/libs/server/repository/core/application-services/src/index.ts
index e5803662..daae11b2 100644
--- a/libs/server/repository/core/application-services/src/index.ts
+++ b/libs/server/repository/core/application-services/src/index.ts
@@ -12,3 +12,6 @@ export * from './lib/queries/list-repositories/list-repositories.read-model';
 export * from './lib/commands/edit-repository/edit-repository.command';
 export * from './lib/queries/get-single-repository-data/get-single-repository-data.handler';
 export * from './lib/queries/get-single-repository-data/single-repository-data.read-model';
+export * from './lib/queries/get-pr-timeline/get-pr-timeline.query';
+export * from './lib/queries/get-pr-timeline/pr-timeline.read-model';
+export * from './lib/timeline.facade';
diff --git a/libs/server/repository/core/application-services/src/lib/queries/get-pr-timeline/get-pr-timeline.handler.ts b/libs/server/repository/core/application-services/src/lib/queries/get-pr-timeline/get-pr-timeline.handler.ts
new file mode 100644
index 00000000..a72800ec
--- /dev/null
+++ b/libs/server/repository/core/application-services/src/lib/queries/get-pr-timeline/get-pr-timeline.handler.ts
@@ -0,0 +1,49 @@
+import { IQueryHandler, QueryHandler } from '@nestjs/cqrs';
+import { GetPrTimelineQuery } from './get-pr-timeline.query';
+import {
+  PrRepository,
+  prRepositoryFactoryToken,
+  RepositoryRepository
+} from '@pimp-my-pr/server/repository/core/domain-services';
+import { PrTimelineReadModel } from '@pimp-my-pr/server/repository/core/application-services';
+import {
+  getTimeLineHistory,
+  InvalidTimelineParametersException,
+  PrEntity,
+  PrState
+} from '@pimp-my-pr/server/repository/core/domain';
+import { prTimelineModelFactory } from '../../read-models/factories/pr-timeline-model.factory';
+import { Inject } from '@nestjs/common';
+import { Platform } from '@pimp-my-pr/shared/domain';
+import { getStepsCount, traversePagesUntil } from '@pimp-my-pr/server/repository/util';
+
+@QueryHandler(GetPrTimelineQuery)
+export class GetPrTimelineHandler implements IQueryHandler<GetPrTimelineQuery> {
+  constructor(
+    @Inject(prRepositoryFactoryToken)
+    private prRepositoryFactory: (platform: Platform) => PrRepository,
+    private repoRepository: RepositoryRepository
+  ) {}
+
+  async execute(query: GetPrTimelineQuery): Promise<PrTimelineReadModel> {
+    const { repositoryId, step, timelineFrom, timelineTo, token, platform, createdAfter } = query;
+    const { fullName } = await this.repoRepository.getById(repositoryId);
+    const prRepository = this.prRepositoryFactory(platform);
+
+    const prs = await traversePagesUntil<PrEntity>(
+      async page =>
+        await prRepository.findByRepositoryId(fullName, token, {
+          prState: PrState.ALL,
+          page,
+          onPage: 100
+        }),
+      100,
+      createdAfter
+    );
+    const stepsCount = getStepsCount(timelineFrom, timelineTo, step);
+    if (stepsCount === 0) throw new InvalidTimelineParametersException('timelineFrom');
+
+    const records = getTimeLineHistory(prs, step, timelineTo, stepsCount);
+    return prTimelineModelFactory(records, query, prs.length);
+  }
+}
diff --git a/libs/server/repository/core/application-services/src/lib/queries/get-pr-timeline/get-pr-timeline.query.ts b/libs/server/repository/core/application-services/src/lib/queries/get-pr-timeline/get-pr-timeline.query.ts
new file mode 100644
index 00000000..849b65ff
--- /dev/null
+++ b/libs/server/repository/core/application-services/src/lib/queries/get-pr-timeline/get-pr-timeline.query.ts
@@ -0,0 +1,14 @@
+import { IQuery } from '@nestjs/cqrs';
+import { Platform, TimelineStep } from '@pimp-my-pr/shared/domain';
+
+export class GetPrTimelineQuery implements IQuery {
+  constructor(
+    public step: TimelineStep,
+    public timelineFrom: Date,
+    public timelineTo: Date,
+    public token: string,
+    public repositoryId: string,
+    public platform: Platform,
+    public createdAfter: Date
+  ) {}
+}
diff --git a/libs/server/repository/core/application-services/src/lib/queries/get-pr-timeline/pr-timeline.read-model.ts b/libs/server/repository/core/application-services/src/lib/queries/get-pr-timeline/pr-timeline.read-model.ts
new file mode 100644
index 00000000..caa02df2
--- /dev/null
+++ b/libs/server/repository/core/application-services/src/lib/queries/get-pr-timeline/pr-timeline.read-model.ts
@@ -0,0 +1,29 @@
+import { TimelineRecord } from '@pimp-my-pr/server/repository/core/domain';
+import { ApiProperty } from '@nestjs/swagger';
+import { TimelineStep } from '@pimp-my-pr/shared/domain';
+
+export class PrTimelineReadModel {
+  @ApiProperty({
+    enum: TimelineStep
+  })
+  step: TimelineStep;
+
+  @ApiProperty()
+  dateFrom: Date;
+
+  @ApiProperty()
+  dateTo: Date;
+
+  @ApiProperty({
+    description: 'Pull requests were taken into account that were created after this date'
+  })
+  createdAfter: Date;
+
+  @ApiProperty({
+    type: [TimelineRecord]
+  })
+  data: TimelineRecord[];
+
+  @ApiProperty()
+  totalPrs: number;
+}
diff --git a/libs/server/repository/core/application-services/src/lib/read-models/factories/pr-timeline-model.factory.ts b/libs/server/repository/core/application-services/src/lib/read-models/factories/pr-timeline-model.factory.ts
new file mode 100644
index 00000000..6d60e344
--- /dev/null
+++ b/libs/server/repository/core/application-services/src/lib/read-models/factories/pr-timeline-model.factory.ts
@@ -0,0 +1,20 @@
+import {
+  GetPrTimelineQuery,
+  PrTimelineReadModel
+} from '@pimp-my-pr/server/repository/core/application-services';
+import { TimelineRecord } from '@pimp-my-pr/server/repository/core/domain';
+
+export const prTimelineModelFactory = (
+  prRecords: TimelineRecord[],
+  query: GetPrTimelineQuery,
+  totalPrs: number
+): PrTimelineReadModel => {
+  return {
+    data: prRecords,
+    step: query.step,
+    dateFrom: query.timelineFrom,
+    dateTo: query.timelineTo,
+    createdAfter: query.createdAfter,
+    totalPrs
+  };
+};
diff --git a/libs/server/repository/core/application-services/src/lib/server-repository-core-application-services.module.ts b/libs/server/repository/core/application-services/src/lib/server-repository-core-application-services.module.ts
index 29be5f11..f81e9a19 100644
--- a/libs/server/repository/core/application-services/src/lib/server-repository-core-application-services.module.ts
+++ b/libs/server/repository/core/application-services/src/lib/server-repository-core-application-services.module.ts
@@ -10,6 +10,8 @@ import { RepositoryFacade } from './repository.facade';
 import { DeleteRepositoryHandler } from './commands/delete-repository/delete-repository.handler';
 import { EditRepositoryHandler } from './commands/edit-repository/edit-repository.handler';
 import { GetSingleRepositoryDataHandler } from './queries/get-single-repository-data/get-single-repository-data.handler';
+import { GetPrTimelineHandler } from './queries/get-pr-timeline/get-pr-timeline.handler';
+import { TimelineFacade } from './timeline.facade';
 
 const QueryHandlers = [
   AddRepositoryHandler,
@@ -20,12 +22,13 @@ const QueryHandlers = [
   GetSingleRepositoryDataHandler,
   ListRepositoriesStatisticsHandler,
   ListReviewersStatisticsHandler,
-  ListRepositoriesHandler
+  ListRepositoriesHandler,
+  GetPrTimelineHandler
 ];
 
 @Module({
   imports: [CqrsModule],
-  providers: [RepositoryFacade, ...QueryHandlers],
-  exports: [RepositoryFacade]
+  providers: [RepositoryFacade, TimelineFacade, ...QueryHandlers],
+  exports: [RepositoryFacade, TimelineFacade]
 })
 export class ServerRepositoryCoreApplicationServicesModule {}
diff --git a/libs/server/repository/core/application-services/src/lib/timeline.facade.ts b/libs/server/repository/core/application-services/src/lib/timeline.facade.ts
new file mode 100644
index 00000000..0492cf32
--- /dev/null
+++ b/libs/server/repository/core/application-services/src/lib/timeline.facade.ts
@@ -0,0 +1,13 @@
+import { QueryBus } from '@nestjs/cqrs';
+import { GetPrTimelineQuery } from './queries/get-pr-timeline/get-pr-timeline.query';
+import { PrTimelineReadModel } from './queries/get-pr-timeline/pr-timeline.read-model';
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class TimelineFacade {
+  constructor(private queryBus: QueryBus) {}
+
+  getPrTimeLine(query: GetPrTimelineQuery): Promise<PrTimelineReadModel> {
+    return this.queryBus.execute(query);
+  }
+}
diff --git a/libs/server/repository/core/domain-services/src/lib/repositories/pr.repository.ts b/libs/server/repository/core/domain-services/src/lib/repositories/pr.repository.ts
index ef9c8013..5ad9232d 100644
--- a/libs/server/repository/core/domain-services/src/lib/repositories/pr.repository.ts
+++ b/libs/server/repository/core/domain-services/src/lib/repositories/pr.repository.ts
@@ -1,7 +1,12 @@
 import { PrEntity } from '@pimp-my-pr/server/repository/core/domain';
+import { PrRepositoryFetchParams } from '@pimp-my-pr/server/repository/core/domain';
 
 export const prRepositoryFactoryToken = Symbol('prRepositoryFactory');
 
 export abstract class PrRepository {
-  abstract findByRepositoryId(repositoryId: string, token: string): Promise<PrEntity[]>;
+  abstract findByRepositoryId(
+    repositoryId: string,
+    token: string,
+    params?: PrRepositoryFetchParams
+  ): Promise<PrEntity[]>;
 }
diff --git a/libs/server/repository/core/domain/src/index.ts b/libs/server/repository/core/domain/src/index.ts
index e4e74253..4346f2ff 100644
--- a/libs/server/repository/core/domain/src/index.ts
+++ b/libs/server/repository/core/domain/src/index.ts
@@ -3,4 +3,14 @@ export * from './lib/entities/pr.entity';
 export * from './lib/entities/repository.entity';
 export * from './lib/entities/reviewer.entity';
 export * from './lib/exceptions/repository-not-found.exception';
+export * from './lib/exceptions/invalid-timeline-parameters.exception';
+export * from './lib/interfaces/i-time-trackable.interface';
+export * from './lib/interfaces/timeline-bucket-item.interface';
+export * from './lib/interfaces/timeline-bucket.interface';
+export * from './lib/interfaces/timeline-date-range.interface';
+export * from './lib/interfaces/timeline-division-base.interface';
+export * from './lib/interfaces/pr-repository-fetch-params.interface';
 export * from './lib/utils/repository-name-extract.util';
+export * from './lib/entities/timeline-record.entity';
+export * from './lib/enums/pr-state.enum';
+export * from './lib/utils/get-timeline-history';
diff --git a/libs/server/repository/core/domain/src/lib/entities/pr.entity.ts b/libs/server/repository/core/domain/src/lib/entities/pr.entity.ts
index 1e5792fe..91ecccd8 100644
--- a/libs/server/repository/core/domain/src/lib/entities/pr.entity.ts
+++ b/libs/server/repository/core/domain/src/lib/entities/pr.entity.ts
@@ -1,8 +1,9 @@
 import { f } from '@marcj/marshal';
 import { AuthorEntity } from './author.entity';
 import { ReviewerEntity } from './reviewer.entity';
+import { ITimeTrackable } from '../interfaces/i-time-trackable.interface';
 
-export class PrEntity {
+export class PrEntity implements ITimeTrackable {
   @f
   additions: number;
   @f
diff --git a/libs/server/repository/core/domain/src/lib/entities/timeline-record.entity.ts b/libs/server/repository/core/domain/src/lib/entities/timeline-record.entity.ts
new file mode 100644
index 00000000..becf175f
--- /dev/null
+++ b/libs/server/repository/core/domain/src/lib/entities/timeline-record.entity.ts
@@ -0,0 +1,22 @@
+import { ApiProperty } from '@nestjs/swagger';
+
+export class TimelineRecord {
+  @ApiProperty()
+  dataFrom: Date;
+  @ApiProperty()
+  sumCount: number;
+  @ApiProperty()
+  avgCount: number;
+  @ApiProperty()
+  avgWaitingTime: number;
+  /**
+   * This property is required to calculate total prs in any period on timeline
+   */
+  @ApiProperty()
+  closedBefore: number;
+  /**
+   * This property is required to calculate total prs in any period on timeline
+   */
+  @ApiProperty()
+  openedAfter: number;
+}
diff --git a/libs/server/repository/core/domain/src/lib/enums/pr-state.enum.ts b/libs/server/repository/core/domain/src/lib/enums/pr-state.enum.ts
new file mode 100644
index 00000000..092558e1
--- /dev/null
+++ b/libs/server/repository/core/domain/src/lib/enums/pr-state.enum.ts
@@ -0,0 +1,5 @@
+export enum PrState {
+  OPEN = 'OPEN',
+  CLOSED = 'CLOSED',
+  ALL = 'ALL'
+}
diff --git a/libs/server/repository/core/domain/src/lib/exceptions/invalid-timeline-parameters.exception.ts b/libs/server/repository/core/domain/src/lib/exceptions/invalid-timeline-parameters.exception.ts
new file mode 100644
index 00000000..3a984b88
--- /dev/null
+++ b/libs/server/repository/core/domain/src/lib/exceptions/invalid-timeline-parameters.exception.ts
@@ -0,0 +1,7 @@
+import { CoreUnprocessableEntityException } from '@pimp-my-pr/server/shared/domain';
+
+export class InvalidTimelineParametersException extends CoreUnprocessableEntityException {
+  constructor(paramName: string) {
+    super(`Invalid ${paramName}`);
+  }
+}
diff --git a/libs/server/repository/core/domain/src/lib/interfaces/i-time-trackable.interface.ts b/libs/server/repository/core/domain/src/lib/interfaces/i-time-trackable.interface.ts
new file mode 100644
index 00000000..49c48b39
--- /dev/null
+++ b/libs/server/repository/core/domain/src/lib/interfaces/i-time-trackable.interface.ts
@@ -0,0 +1,4 @@
+export interface ITimeTrackable {
+  createdAt: Date;
+  closedAt?: Date;
+}
diff --git a/libs/server/repository/core/domain/src/lib/interfaces/pr-repository-fetch-params.interface.ts b/libs/server/repository/core/domain/src/lib/interfaces/pr-repository-fetch-params.interface.ts
new file mode 100644
index 00000000..63b9c1c9
--- /dev/null
+++ b/libs/server/repository/core/domain/src/lib/interfaces/pr-repository-fetch-params.interface.ts
@@ -0,0 +1,7 @@
+import { PrState } from '../enums/pr-state.enum';
+
+export interface PrRepositoryFetchParams {
+  prState?: PrState;
+  page?: number;
+  onPage?: number;
+}
diff --git a/libs/server/repository/core/domain/src/lib/interfaces/timeline-bucket-item.interface.ts b/libs/server/repository/core/domain/src/lib/interfaces/timeline-bucket-item.interface.ts
new file mode 100644
index 00000000..4aea8d97
--- /dev/null
+++ b/libs/server/repository/core/domain/src/lib/interfaces/timeline-bucket-item.interface.ts
@@ -0,0 +1,4 @@
+export interface TimelineBucketItem<T> {
+  entity: T;
+  timeIn: number;
+}
diff --git a/libs/server/repository/core/domain/src/lib/interfaces/timeline-bucket.interface.ts b/libs/server/repository/core/domain/src/lib/interfaces/timeline-bucket.interface.ts
new file mode 100644
index 00000000..8af1193b
--- /dev/null
+++ b/libs/server/repository/core/domain/src/lib/interfaces/timeline-bucket.interface.ts
@@ -0,0 +1,5 @@
+import { TimelineBucketItem } from './timeline-bucket-item.interface';
+
+export interface TimelineBuckets<T> {
+  [label: number]: TimelineBucketItem<T>[];
+}
diff --git a/libs/server/repository/core/domain/src/lib/interfaces/timeline-date-range.interface.ts b/libs/server/repository/core/domain/src/lib/interfaces/timeline-date-range.interface.ts
new file mode 100644
index 00000000..b7b3922b
--- /dev/null
+++ b/libs/server/repository/core/domain/src/lib/interfaces/timeline-date-range.interface.ts
@@ -0,0 +1,4 @@
+export interface TimelineDateRange {
+  dateFrom: Date;
+  dateTo: Date;
+}
diff --git a/libs/server/repository/core/domain/src/lib/interfaces/timeline-division-base.interface.ts b/libs/server/repository/core/domain/src/lib/interfaces/timeline-division-base.interface.ts
new file mode 100644
index 00000000..393e6a84
--- /dev/null
+++ b/libs/server/repository/core/domain/src/lib/interfaces/timeline-division-base.interface.ts
@@ -0,0 +1,5 @@
+import { TimelineDateRange } from './timeline-date-range.interface';
+
+export interface TimelineDivisionBase {
+  [timestamp: number]: TimelineDateRange;
+}
diff --git a/libs/server/repository/core/domain/src/lib/utils/divide-items-into-buckets.util.ts b/libs/server/repository/core/domain/src/lib/utils/divide-items-into-buckets.util.ts
new file mode 100644
index 00000000..8d93b3b2
--- /dev/null
+++ b/libs/server/repository/core/domain/src/lib/utils/divide-items-into-buckets.util.ts
@@ -0,0 +1,41 @@
+import { PrEntity, TimelineDivisionBase } from '@pimp-my-pr/server/repository/core/domain';
+import { TimelineBuckets } from '@pimp-my-pr/server/repository/core/domain';
+import { generateTimelineBuckets } from './generate-timeline-buckets.util';
+import { wrapInBucketItem } from './wrap-in-bucket-item.util';
+import { ITimeTrackable } from '@pimp-my-pr/server/repository/core/domain';
+
+export function divideItemsIntoBuckets<T extends ITimeTrackable>(
+  bucketRanges: TimelineDivisionBase,
+  items: T[]
+): TimelineBuckets<T> {
+  const buckets = generateTimelineBuckets<T>(bucketRanges);
+
+  items
+    .map(pr => wrapInBucketItem(pr))
+    .forEach(current => {
+      Object.entries(bucketRanges)
+        .map(([ts, record]) => {
+          const lowerBound = Math.max(
+            record.dateFrom.getTime(),
+            current.entity.createdAt.getTime()
+          );
+          const upperBound = current.entity.closedAt
+            ? Math.min(record.dateTo.getTime(), current.entity.closedAt.getTime())
+            : record.dateTo.getTime();
+          return {
+            labelTimestamp: Number(ts),
+            timeIn: upperBound - lowerBound,
+            rangeSize: record.dateTo.getTime() - record.dateFrom.getTime()
+          };
+        })
+        .filter(row => row.timeIn > 0)
+        .forEach(currentEntry => {
+          buckets[currentEntry.labelTimestamp].push({
+            timeIn: currentEntry.timeIn,
+            entity: current.entity
+          });
+        });
+    });
+
+  return buckets;
+}
diff --git a/libs/server/repository/core/domain/src/lib/utils/generate-stats.util.ts b/libs/server/repository/core/domain/src/lib/utils/generate-stats.util.ts
new file mode 100644
index 00000000..c4a9b98b
--- /dev/null
+++ b/libs/server/repository/core/domain/src/lib/utils/generate-stats.util.ts
@@ -0,0 +1,48 @@
+import { TimelineBuckets } from '@pimp-my-pr/server/repository/core/domain';
+import { TimelineDivisionBase } from '@pimp-my-pr/server/repository/core/domain';
+import { TimelineRecord } from '@pimp-my-pr/server/repository/core/domain';
+import { ITimeTrackable } from '@pimp-my-pr/server/repository/core/domain';
+
+export function generateStats<T extends ITimeTrackable>(
+  buckets: TimelineBuckets<T>,
+  bucketRanges: TimelineDivisionBase,
+  raw: T[]
+): TimelineRecord[] {
+  return Object.entries(buckets).map(
+    ([ts, entry]): TimelineRecord => {
+      const periodEnd = bucketRanges[ts].dateTo.getTime();
+      const periodStart = bucketRanges[ts].dateFrom.getTime();
+      const entityCount = entry.length;
+      const { closedBefore, openedAfter } = raw.reduce(
+        (total, current) => ({
+          closedBefore:
+            total.closedBefore +
+            Number(current.closedAt && current.closedAt.getTime() < periodStart),
+          openedAfter: total.openedAfter + Number(current.createdAt.getTime() > periodEnd)
+        }),
+        { closedBefore: 0, openedAfter: 0 }
+      );
+      const { entitySumTimeIn, entitySumTimeOpened } = entry.reduce(
+        (total, current) => ({
+          entitySumTimeOpened: total.entitySumTimeOpened + current.timeIn,
+          entitySumTimeIn:
+            total.entitySumTimeIn +
+            (current.entity.closedAt
+              ? Math.min(current.entity.closedAt.getTime(), periodEnd)
+              : periodEnd) -
+            current.entity.createdAt.getTime()
+        }),
+        { entitySumTimeIn: 0, entitySumTimeOpened: 0 }
+      );
+      const avgWaitingTime = entityCount ? entitySumTimeOpened / entityCount : 0;
+      return {
+        dataFrom: new Date(Number(ts)),
+        sumCount: entityCount,
+        avgCount: entitySumTimeIn / (periodEnd - periodStart),
+        avgWaitingTime: avgWaitingTime,
+        closedBefore,
+        openedAfter
+      };
+    }
+  );
+}
diff --git a/libs/server/repository/core/domain/src/lib/utils/generate-timeline-bucket-ranges.util.ts b/libs/server/repository/core/domain/src/lib/utils/generate-timeline-bucket-ranges.util.ts
new file mode 100644
index 00000000..f337d3b0
--- /dev/null
+++ b/libs/server/repository/core/domain/src/lib/utils/generate-timeline-bucket-ranges.util.ts
@@ -0,0 +1,22 @@
+import { TimelineDivisionBase } from '@pimp-my-pr/server/repository/core/domain';
+import { decreaseDateByTimelineStep } from '@pimp-my-pr/server/repository/util';
+import { TimelineStep } from '@pimp-my-pr/shared/domain';
+
+export const generateTimelineBucketRanges = (
+  date: Date,
+  entriesCount: number,
+  step: TimelineStep
+): TimelineDivisionBase => {
+  return Array.from(Array(entriesCount).keys())
+    .map((key: number) => decreaseDateByTimelineStep(date, step, key + 1))
+    .reduce(
+      (result, thisDate, index, array) => ({
+        ...result,
+        [thisDate.getTime()]: {
+          dateFrom: thisDate,
+          dateTo: index ? array[index - 1] : date
+        }
+      }),
+      {}
+    );
+};
diff --git a/libs/server/repository/core/domain/src/lib/utils/generate-timeline-buckets.util.ts b/libs/server/repository/core/domain/src/lib/utils/generate-timeline-buckets.util.ts
new file mode 100644
index 00000000..a413c477
--- /dev/null
+++ b/libs/server/repository/core/domain/src/lib/utils/generate-timeline-buckets.util.ts
@@ -0,0 +1,12 @@
+import { TimelineDivisionBase } from '@pimp-my-pr/server/repository/core/domain';
+import { TimelineBuckets } from '@pimp-my-pr/server/repository/core/domain';
+
+export function generateTimelineBuckets<T>(div: TimelineDivisionBase): TimelineBuckets<T> {
+  return Object.entries(div).reduce(
+    (total, [timestamp, _]) => ({
+      ...total,
+      [Number(timestamp)]: []
+    }),
+    {}
+  );
+}
diff --git a/libs/server/repository/core/domain/src/lib/utils/get-timeline-history.ts b/libs/server/repository/core/domain/src/lib/utils/get-timeline-history.ts
new file mode 100644
index 00000000..fefb4ef5
--- /dev/null
+++ b/libs/server/repository/core/domain/src/lib/utils/get-timeline-history.ts
@@ -0,0 +1,19 @@
+import { TimelineRecord } from '@pimp-my-pr/server/repository/core/domain';
+import { generateTimelineBucketRanges } from './generate-timeline-bucket-ranges.util';
+import { divideItemsIntoBuckets } from './divide-items-into-buckets.util';
+import { generateStats } from './generate-stats.util';
+import { ITimeTrackable } from '@pimp-my-pr/server/repository/core/domain';
+import { getStepBeginning } from '@pimp-my-pr/server/repository/util';
+import { TimelineStep } from '@pimp-my-pr/shared/domain';
+
+export function getTimeLineHistory<T extends ITimeTrackable>(
+  items: T[],
+  step: TimelineStep,
+  date: Date,
+  bucketsCount: number
+): TimelineRecord[] {
+  const stepBegin = getStepBeginning(date, step);
+  const bucketRanges = generateTimelineBucketRanges(stepBegin, bucketsCount, step);
+  const buckets = divideItemsIntoBuckets<T>(bucketRanges, items);
+  return generateStats(buckets, bucketRanges, items);
+}
diff --git a/libs/server/repository/core/domain/src/lib/utils/wrap-in-bucket-item.util.ts b/libs/server/repository/core/domain/src/lib/utils/wrap-in-bucket-item.util.ts
new file mode 100644
index 00000000..7da2b280
--- /dev/null
+++ b/libs/server/repository/core/domain/src/lib/utils/wrap-in-bucket-item.util.ts
@@ -0,0 +1,8 @@
+import { TimelineBucketItem } from '@pimp-my-pr/server/repository/core/domain';
+
+export function wrapInBucketItem<T>(item: T): TimelineBucketItem<T> {
+  return {
+    timeIn: 0,
+    entity: item
+  };
+}
diff --git a/libs/server/repository/infrastructure/src/lib/bitbucket/domain/enums/bitbucket-pr-state.enum.ts b/libs/server/repository/infrastructure/src/lib/bitbucket/domain/enums/bitbucket-pr-state.enum.ts
new file mode 100644
index 00000000..a267ccd7
--- /dev/null
+++ b/libs/server/repository/infrastructure/src/lib/bitbucket/domain/enums/bitbucket-pr-state.enum.ts
@@ -0,0 +1,5 @@
+export enum BitbucketPrState {
+  ALL = '',
+  CLOSED = 'MERGED',
+  OPEN = 'OPEN'
+}
diff --git a/libs/server/repository/infrastructure/src/lib/bitbucket/repositories/bitbucket-pr.repository.ts b/libs/server/repository/infrastructure/src/lib/bitbucket/repositories/bitbucket-pr.repository.ts
index f9a7095c..b20f16a3 100644
--- a/libs/server/repository/infrastructure/src/lib/bitbucket/repositories/bitbucket-pr.repository.ts
+++ b/libs/server/repository/infrastructure/src/lib/bitbucket/repositories/bitbucket-pr.repository.ts
@@ -1,5 +1,5 @@
 import { HttpService, Injectable } from '@nestjs/common';
-import { PrEntity } from '@pimp-my-pr/server/repository/core/domain';
+import { PrEntity, PrState } from '@pimp-my-pr/server/repository/core/domain';
 import { PrRepository } from '@pimp-my-pr/server/repository/core/domain-services';
 import { bitbucketConfig } from '@pimp-my-pr/server/shared/config';
 import { catchRequestExceptions } from '@pimp-my-pr/server/shared/util-exception';
@@ -12,6 +12,8 @@ import { BitbucketPrDiffEntity } from '../domain/entities/bitbucket-pr-diff.enti
 import { BitbucketPrEntity } from '../domain/entities/bitbucket-pr.entity';
 import { BitbucketPaginatedResponse } from '../domain/interfaces/bitbucket-paginated-response.interface';
 import { mapBitbucketPrDetails } from '../mappers/map-bitbucket-pr-details';
+import { urlWithQueryParams } from '@pimp-my-pr/shared/domain';
+import { BitbucketPrState } from '../domain/enums/bitbucket-pr-state.enum';
 
 @Injectable()
 export class BitbucketPrRepository extends PrRepository {
@@ -26,11 +28,23 @@ export class BitbucketPrRepository extends PrRepository {
     super();
   }
 
-  findByRepositoryId(repositoryId: string, token: string): Promise<PrEntity[]> {
+  findByRepositoryId(
+    repositoryId: string,
+    token: string,
+    { prState = PrState.OPEN, page = 1, onPage = 50 } = {
+      prState: PrState.OPEN,
+      page: 1,
+      onPage: 50
+    }
+  ): Promise<PrEntity[]> {
     return this.getDataFromAllPages(
       this.httpService
         .get<BitbucketPaginatedResponse<BitbucketPrEntity[]>>(
-          this.endpoints.getRepositoryPrs.url({ repositoryId }),
+          urlWithQueryParams(this.endpoints.getRepositoryPrs.url({ repositoryId }), {
+            page: page,
+            pagelen: onPage,
+            state: BitbucketPrState[prState]
+          }),
           { headers: { Authorization: `Bearer ${token}` } }
         )
         .pipe(map(res => res.data)),
diff --git a/libs/server/repository/infrastructure/src/lib/github/domain/enums/github-pr-status.enum.ts b/libs/server/repository/infrastructure/src/lib/github/domain/enums/github-pr-status.enum.ts
index b2a417f6..b7c03a75 100644
--- a/libs/server/repository/infrastructure/src/lib/github/domain/enums/github-pr-status.enum.ts
+++ b/libs/server/repository/infrastructure/src/lib/github/domain/enums/github-pr-status.enum.ts
@@ -1,4 +1,5 @@
-export enum GithubPrStatus {
-  closed = 'closed',
-  open = 'open'
+export enum GithubPrState {
+  CLOSED = 'closed',
+  OPEN = 'open',
+  ALL = 'all'
 }
diff --git a/libs/server/repository/infrastructure/src/lib/github/repositories/github-pr.repository.ts b/libs/server/repository/infrastructure/src/lib/github/repositories/github-pr.repository.ts
index 80337a57..4417c583 100644
--- a/libs/server/repository/infrastructure/src/lib/github/repositories/github-pr.repository.ts
+++ b/libs/server/repository/infrastructure/src/lib/github/repositories/github-pr.repository.ts
@@ -1,5 +1,5 @@
 import { HttpService, Injectable } from '@nestjs/common';
-import { PrEntity } from '@pimp-my-pr/server/repository/core/domain';
+import { PrEntity, PrState } from '@pimp-my-pr/server/repository/core/domain';
 import { PrRepository } from '@pimp-my-pr/server/repository/core/domain-services';
 import { githubConfig } from '@pimp-my-pr/server/shared/config';
 import { catchRequestExceptions } from '@pimp-my-pr/server/shared/util-exception';
@@ -9,6 +9,8 @@ import { map, switchMap } from 'rxjs/operators';
 import { GithubPrDetailsEntity } from '../domain/entities/github-pr-details.entity';
 import { GithubPrEntity } from '../domain/entities/github-pr.entity';
 import { mapGithubPr } from '../mappers/map-github-pr';
+import { urlWithQueryParams } from '@pimp-my-pr/shared/domain';
+import { GithubPrState } from '../domain/enums/github-pr-status.enum';
 
 @Injectable()
 export class GithubPrRepository extends PrRepository {
@@ -37,14 +39,33 @@ export class GithubPrRepository extends PrRepository {
       .toPromise();
   }
 
-  findByRepositoryId(repositoryId: string, token: string): Promise<PrEntity[]> {
+  findByRepositoryId(
+    repositoryId: string,
+    token: string,
+    { prState = PrState.OPEN, page = 1, onPage = 50 } = {
+      prState: PrState.OPEN,
+      page: 1,
+      onPage: 50
+    }
+  ): Promise<PrEntity[]> {
     return this.httpService
-      .get<GithubPrEntity[]>(this.endpoints.getRepositoryPrs.url({ fullName: repositoryId }), {
-        headers: { Authorization: `token ${token}` }
-      })
+      .get<GithubPrEntity[]>(
+        urlWithQueryParams(
+          this.endpoints.getRepositoryPrs.url({
+            fullName: repositoryId
+          }),
+          {
+            page: page,
+            state: GithubPrState[prState],
+            per_page: onPage
+          }
+        ),
+        {
+          headers: { Authorization: `token ${token}` }
+        }
+      )
       .pipe(
         map(res => res.data),
-
         switchMap(prs =>
           prs.length ? forkJoin(prs.map(pr => this.get(repositoryId, pr.number, token))) : of([])
         )
diff --git a/libs/server/repository/infrastructure/src/lib/gitlab/domain/enum/gitlab-pr-state.enum.ts b/libs/server/repository/infrastructure/src/lib/gitlab/domain/enum/gitlab-pr-state.enum.ts
new file mode 100644
index 00000000..737f8aa7
--- /dev/null
+++ b/libs/server/repository/infrastructure/src/lib/gitlab/domain/enum/gitlab-pr-state.enum.ts
@@ -0,0 +1,5 @@
+export enum GitlabPrState {
+  ALL = 'all',
+  OPEN = 'opened',
+  CLOSED = 'closed'
+}
diff --git a/libs/server/repository/infrastructure/src/lib/gitlab/repositories/gitlab-pr.repository.ts b/libs/server/repository/infrastructure/src/lib/gitlab/repositories/gitlab-pr.repository.ts
index 815eba16..84c3df72 100644
--- a/libs/server/repository/infrastructure/src/lib/gitlab/repositories/gitlab-pr.repository.ts
+++ b/libs/server/repository/infrastructure/src/lib/gitlab/repositories/gitlab-pr.repository.ts
@@ -1,5 +1,5 @@
 import { HttpService, Injectable } from '@nestjs/common';
-import { PrEntity } from '@pimp-my-pr/server/repository/core/domain';
+import { PrEntity, PrState } from '@pimp-my-pr/server/repository/core/domain';
 import { PrRepository } from '@pimp-my-pr/server/repository/core/domain-services';
 import { gitlabConfig } from '@pimp-my-pr/server/shared/config';
 import { catchRequestExceptions } from '@pimp-my-pr/server/shared/util-exception';
@@ -9,6 +9,8 @@ import { map, switchMap } from 'rxjs/operators';
 import { GitlabPrEntity } from '../domain/entities/gitlab-pr.entity';
 import { mapGitlabPr } from '../mappers/map-gitalb-pr';
 import { GitlabPrDetailsEntity } from '../domain/entities/gitlab-pr-details.entity';
+import { urlWithQueryParams } from '@pimp-my-pr/shared/domain';
+import { GithubPrState } from '../../github/domain/enums/github-pr-status.enum';
 
 @Injectable()
 export class GitlabPrRepository extends PrRepository {
@@ -43,10 +45,25 @@ export class GitlabPrRepository extends PrRepository {
       .toPromise();
   }
 
-  findByRepositoryId(repositoryId: string, token: string): Promise<PrEntity[]> {
+  findByRepositoryId(
+    repositoryId: string,
+    token: string,
+    { prState = PrState.OPEN, page = 1, onPage = 50 } = {
+      prState: PrState.OPEN,
+      page: 1,
+      onPage: 50
+    }
+  ): Promise<PrEntity[]> {
     return this.httpService
       .get<GitlabPrEntity[]>(
-        this.endpoints.getRepositoryPrs.url({ fullName: encodeURIComponent(repositoryId) }),
+        urlWithQueryParams(
+          this.endpoints.getRepositoryPrs.url({ fullName: encodeURIComponent(repositoryId) }),
+          {
+            page: page,
+            per_page: onPage,
+            state: GithubPrState[prState]
+          }
+        ),
         {
           headers: { Authorization: `Bearer ${token}` }
         }
diff --git a/libs/server/repository/util/README.md b/libs/server/repository/util/README.md
new file mode 100644
index 00000000..8f3c9183
--- /dev/null
+++ b/libs/server/repository/util/README.md
@@ -0,0 +1,7 @@
+# server-repository-timeline-util
+
+This library was generated with [Nx](https://nx.dev).
+
+## Running unit tests
+
+Run `nx test server-repository-timeline-util` to execute the unit tests.
diff --git a/libs/server/repository/util/jest.config.js b/libs/server/repository/util/jest.config.js
new file mode 100644
index 00000000..19339328
--- /dev/null
+++ b/libs/server/repository/util/jest.config.js
@@ -0,0 +1,10 @@
+module.exports = {
+  name: 'server-repository-util',
+  preset: '../../../../jest.config.js',
+  coverageDirectory: '../../../../coverage/libs/server/repository/util',
+  snapshotSerializers: [
+    'jest-preset-angular/build/AngularNoNgAttributesSnapshotSerializer.js',
+    'jest-preset-angular/build/AngularSnapshotSerializer.js',
+    'jest-preset-angular/build/HTMLCommentSerializer.js'
+  ]
+};
diff --git a/libs/server/repository/util/src/index.ts b/libs/server/repository/util/src/index.ts
new file mode 100644
index 00000000..b6586ce5
--- /dev/null
+++ b/libs/server/repository/util/src/index.ts
@@ -0,0 +1,5 @@
+export * from './lib/traverse-pages-until.util';
+export * from './lib/date/get-steps-count.util';
+export * from './lib/date/decrease-date-by-timeline-step.util';
+export * from './lib/date/decrease-date-by-timeline-step.util';
+export * from './lib/date/get-step-beginning.util';
diff --git a/libs/server/repository/util/src/lib/date/decrease-date-by-timeline-step.util.spec.ts b/libs/server/repository/util/src/lib/date/decrease-date-by-timeline-step.util.spec.ts
new file mode 100644
index 00000000..90432c0d
--- /dev/null
+++ b/libs/server/repository/util/src/lib/date/decrease-date-by-timeline-step.util.spec.ts
@@ -0,0 +1,33 @@
+import { decreaseDateByTimelineStep } from './decrease-date-by-timeline-step.util';
+
+describe('#decreaseDateByTimelineStep', () => {
+  it('should subtract n days', () => {
+    expect(decreaseDateByTimelineStep(new Date('1995-12-17T00:00:00'), 'day', 7)).toEqual(
+      new Date('1995-12-10T00:00:00')
+    );
+  });
+  it('should subtract n weeks', () => {
+    expect(decreaseDateByTimelineStep(new Date('1995-12-17T00:00:00'), 'week', 2)).toEqual(
+      new Date('1995-12-03T00:00:00')
+    );
+  });
+  it('should subtract n months', () => {
+    expect(decreaseDateByTimelineStep(new Date('1995-12-17T00:00:00'), 'month', 7)).toEqual(
+      new Date('1995-05-01T00:00:00')
+    );
+  });
+  it('should subtract n quarters', () => {
+    expect(decreaseDateByTimelineStep(new Date('1995-12-17T00:00:00'), 'quarter', 2)).toEqual(
+      new Date('1995-06-01T00:00:00')
+    );
+  });
+  it('should subtract n days', () => {
+    expect(decreaseDateByTimelineStep(new Date('2000-12-17T00:00:00'), 'year', 5)).toEqual(
+      new Date('1995-12-01T00:00:00')
+    );
+  });
+  it('should return new object', () => {
+    const date = new Date('1995-12-17T00:00:00');
+    expect(decreaseDateByTimelineStep(date, 'day', 5)).not.toBe(date);
+  });
+});
diff --git a/libs/server/repository/util/src/lib/date/decrease-date-by-timeline-step.util.ts b/libs/server/repository/util/src/lib/date/decrease-date-by-timeline-step.util.ts
new file mode 100644
index 00000000..65ad8e6a
--- /dev/null
+++ b/libs/server/repository/util/src/lib/date/decrease-date-by-timeline-step.util.ts
@@ -0,0 +1,22 @@
+import { subtractDaysFromDate } from './subtract-days-from-date.util';
+import { subtractMonthsFromDate } from './subtract-months-from-date.util';
+import { TimelineStep } from '@pimp-my-pr/shared/domain';
+
+export const decreaseDateByTimelineStep = (
+  date: Date,
+  step: TimelineStep,
+  numSteps: number
+): Date => {
+  switch (step) {
+    case TimelineStep.DAY:
+      return subtractDaysFromDate(date, numSteps);
+    case TimelineStep.WEEK:
+      return subtractDaysFromDate(date, 7 * numSteps);
+    case TimelineStep.MONTH:
+      return subtractMonthsFromDate(date, numSteps);
+    case TimelineStep.QUARTER:
+      return subtractMonthsFromDate(date, 3 * numSteps);
+    case TimelineStep.YEAR:
+      return subtractMonthsFromDate(date, 12 * numSteps);
+  }
+};
diff --git a/libs/server/repository/util/src/lib/date/get-step-beginning.util.spec.ts b/libs/server/repository/util/src/lib/date/get-step-beginning.util.spec.ts
new file mode 100644
index 00000000..ad942255
--- /dev/null
+++ b/libs/server/repository/util/src/lib/date/get-step-beginning.util.spec.ts
@@ -0,0 +1,39 @@
+import { getStepBeginning } from './get-step-beginning.util';
+import { TimelineStep } from '@pimp-my-pr/server/repository/core/domain';
+
+describe('#getStepBeginning', () => {
+  it('should return day beginning', () => {
+    expect(getStepBeginning(new Date('1995-12-10T12:12:32'), TimelineStep.DAY)).toEqual(
+      new Date('1995-12-10T00:00:00')
+    );
+  });
+
+  it('should return week beginning', () => {
+    expect(getStepBeginning(new Date('1995-12-06T12:12:32'), TimelineStep.WEEK)).toEqual(
+      new Date('1995-12-03T00:00:00')
+    );
+  });
+
+  it('should return month beginning', () => {
+    expect(getStepBeginning(new Date('1995-12-10T12:12:32'), TimelineStep.MONTH)).toEqual(
+      new Date('1995-12-01T00:00:00')
+    );
+  });
+
+  it('should return quarter beginning', () => {
+    expect(getStepBeginning(new Date('1995-12-10T12:12:32'), TimelineStep.QUARTER)).toEqual(
+      new Date('1995-09-01T00:00:00')
+    );
+  });
+
+  it('should return year beginning', () => {
+    expect(getStepBeginning(new Date('1995-12-10T12:12:32'), TimelineStep.YEAR)).toEqual(
+      new Date('1995-01-01T00:00:00')
+    );
+  });
+
+  it('should return new object', () => {
+    const date = new Date('1995-12-17T00:00:00');
+    expect(getStepBeginning(date, TimelineStep.DAY)).not.toBe(date);
+  });
+});
diff --git a/libs/server/repository/util/src/lib/date/get-step-beginning.util.ts b/libs/server/repository/util/src/lib/date/get-step-beginning.util.ts
new file mode 100644
index 00000000..84b3be91
--- /dev/null
+++ b/libs/server/repository/util/src/lib/date/get-step-beginning.util.ts
@@ -0,0 +1,22 @@
+import { subtractDaysFromDate } from './subtract-days-from-date.util';
+import { TimelineStep } from '@pimp-my-pr/shared/domain';
+
+export const getStepBeginning = (date: Date, step: TimelineStep): Date => {
+  let dateNew = new Date(date);
+  switch (step) {
+    case TimelineStep.YEAR:
+      dateNew.setMonth(0, 1);
+      break;
+    case TimelineStep.QUARTER:
+      dateNew.setMonth(Math.floor(dateNew.getMonth() / 3) * 3 - 1, 1);
+      break;
+    case TimelineStep.MONTH:
+      dateNew.setDate(1);
+      break;
+    case TimelineStep.WEEK:
+      dateNew = subtractDaysFromDate(dateNew, dateNew.getDay());
+      break;
+  }
+  dateNew.setHours(0, 0, 0, 0);
+  return dateNew;
+};
diff --git a/libs/server/repository/util/src/lib/date/get-steps-count.util.spec.ts b/libs/server/repository/util/src/lib/date/get-steps-count.util.spec.ts
new file mode 100644
index 00000000..1e91c1e4
--- /dev/null
+++ b/libs/server/repository/util/src/lib/date/get-steps-count.util.spec.ts
@@ -0,0 +1,14 @@
+import { getStepsCount } from './get-steps-count.util';
+import { TimelineStep } from '@pimp-my-pr/server/repository/core/domain';
+
+describe('#getStepsCount', () => {
+  it('should return a correct number of steps', () => {
+    expect(
+      getStepsCount(
+        new Date('1995-12-02T12:12:32'),
+        new Date('1995-12-06T12:12:32'),
+        TimelineStep.DAY
+      )
+    ).toBe(4);
+  });
+});
diff --git a/libs/server/repository/util/src/lib/date/get-steps-count.util.ts b/libs/server/repository/util/src/lib/date/get-steps-count.util.ts
new file mode 100644
index 00000000..9e7d39e0
--- /dev/null
+++ b/libs/server/repository/util/src/lib/date/get-steps-count.util.ts
@@ -0,0 +1,14 @@
+import { getStepBeginning } from './get-step-beginning.util';
+import { decreaseDateByTimelineStep } from './decrease-date-by-timeline-step.util';
+import { TimelineStep } from '@pimp-my-pr/shared/domain';
+
+export const getStepsCount = (dateFrom: Date, dateTo: Date, step: TimelineStep): number => {
+  let stepsCount = 0;
+  const fromStep = getStepBeginning(dateFrom, step);
+  let toStep = getStepBeginning(dateTo, step);
+  while (toStep.getTime() > fromStep.getTime()) {
+    toStep = decreaseDateByTimelineStep(toStep, step, 1);
+    stepsCount++;
+  }
+  return stepsCount ? stepsCount - 1 : 0;
+};
diff --git a/libs/server/repository/util/src/lib/date/subtract-days-from-date.util.spec.ts b/libs/server/repository/util/src/lib/date/subtract-days-from-date.util.spec.ts
new file mode 100644
index 00000000..2ffa9d13
--- /dev/null
+++ b/libs/server/repository/util/src/lib/date/subtract-days-from-date.util.spec.ts
@@ -0,0 +1,13 @@
+import { subtractDaysFromDate } from './subtract-days-from-date.util';
+
+describe('#subtractDaysFromDate', () => {
+  it('should subtract n days', () => {
+    expect(subtractDaysFromDate(new Date('1995-12-17T00:00:00'), 7)).toEqual(
+      new Date('1995-12-10T00:00:00')
+    );
+  });
+  it('should return new object', () => {
+    const date = new Date('1995-12-17T00:00:00');
+    expect(subtractDaysFromDate(date, 5)).not.toBe(date);
+  });
+});
diff --git a/libs/server/repository/util/src/lib/date/subtract-days-from-date.util.ts b/libs/server/repository/util/src/lib/date/subtract-days-from-date.util.ts
new file mode 100644
index 00000000..9796958a
--- /dev/null
+++ b/libs/server/repository/util/src/lib/date/subtract-days-from-date.util.ts
@@ -0,0 +1,4 @@
+export const subtractDaysFromDate = (date: Date, days: number): Date => {
+  const day = 24 * 60 * 60 * 1000;
+  return new Date(date.getTime() - day * days);
+};
diff --git a/libs/server/repository/util/src/lib/date/subtract-months-from-date.util.spec.ts b/libs/server/repository/util/src/lib/date/subtract-months-from-date.util.spec.ts
new file mode 100644
index 00000000..45c09757
--- /dev/null
+++ b/libs/server/repository/util/src/lib/date/subtract-months-from-date.util.spec.ts
@@ -0,0 +1,18 @@
+import { subtractMonthsFromDate } from './subtract-months-from-date.util';
+
+describe('#subtractMonthsFromDate', () => {
+  it('should subtract n months if there is no year-switch necessary', () => {
+    expect(subtractMonthsFromDate(new Date('1995-12-17T00:00:00'), 5)).toEqual(
+      new Date('1995-07-01T00:00:00')
+    );
+  });
+  it('should subtract n months if there is an year-switch necessary', () => {
+    expect(subtractMonthsFromDate(new Date('1995-01-17T00:00:00'), 2)).toEqual(
+      new Date('1994-11-01T00:00:00')
+    );
+  });
+  it('should return new object', () => {
+    const date = new Date('1995-12-17T00:00:00');
+    expect(subtractMonthsFromDate(date, 5)).not.toBe(date);
+  });
+});
diff --git a/libs/server/repository/util/src/lib/date/subtract-months-from-date.util.ts b/libs/server/repository/util/src/lib/date/subtract-months-from-date.util.ts
new file mode 100644
index 00000000..77440e35
--- /dev/null
+++ b/libs/server/repository/util/src/lib/date/subtract-months-from-date.util.ts
@@ -0,0 +1,7 @@
+export const subtractMonthsFromDate = (date: Date, nofMonths: number): Date => {
+  const thisMonth = date.getMonth();
+  const newDate = new Date(date);
+  newDate.setMonth(thisMonth - nofMonths);
+  newDate.setDate(1);
+  return newDate;
+};
diff --git a/libs/server/repository/util/src/lib/pad-number-to-places.util.spec.ts b/libs/server/repository/util/src/lib/pad-number-to-places.util.spec.ts
new file mode 100644
index 00000000..26d7035f
--- /dev/null
+++ b/libs/server/repository/util/src/lib/pad-number-to-places.util.spec.ts
@@ -0,0 +1,11 @@
+import { padNumberToPlaces } from './pad-number-to-places.util';
+
+describe('#padNumberToPlaces', () => {
+  it('should does not change input if it is longer than specified', () => {
+    expect(padNumberToPlaces(1000, 3)).toBe('1000');
+  });
+
+  it('should add zeros at he beginning if the number is shorter', () => {
+    expect(padNumberToPlaces(56, 4)).toBe('0056');
+  });
+});
diff --git a/libs/server/repository/util/src/lib/pad-number-to-places.util.ts b/libs/server/repository/util/src/lib/pad-number-to-places.util.ts
new file mode 100644
index 00000000..e7c63121
--- /dev/null
+++ b/libs/server/repository/util/src/lib/pad-number-to-places.util.ts
@@ -0,0 +1,2 @@
+export const padNumberToPlaces = (num: number, places = 2): string =>
+  String(num).padStart(places, '0');
diff --git a/libs/server/repository/util/src/lib/traverse-pages-until.util.ts b/libs/server/repository/util/src/lib/traverse-pages-until.util.ts
new file mode 100644
index 00000000..97745529
--- /dev/null
+++ b/libs/server/repository/util/src/lib/traverse-pages-until.util.ts
@@ -0,0 +1,24 @@
+import { ITimeTrackable } from '@pimp-my-pr/server/repository/core/domain';
+
+export type TraverseCallbackType<T> = (page: number) => Promise<T[]>;
+
+export async function traversePagesUntil<T extends ITimeTrackable>(
+  callback: TraverseCallbackType<T>,
+  onPage: number,
+  end: Date
+): Promise<T[]> {
+  let page = 1;
+  let result = [];
+  while (true) {
+    const response = await callback(page++);
+    const hasReachedLimit = response[response.length - 1].createdAt.getTime() < end.getTime();
+    result = [
+      ...result,
+      ...(hasReachedLimit
+        ? response.filter(entity => entity.createdAt.getTime() > end.getTime())
+        : response)
+    ];
+    if (response.length < onPage || hasReachedLimit) break;
+  }
+  return result;
+}
diff --git a/libs/server/repository/util/src/test-setup.ts b/libs/server/repository/util/src/test-setup.ts
new file mode 100644
index 00000000..8d88704e
--- /dev/null
+++ b/libs/server/repository/util/src/test-setup.ts
@@ -0,0 +1 @@
+import 'jest-preset-angular';
diff --git a/libs/server/repository/util/tsconfig.json b/libs/server/repository/util/tsconfig.json
new file mode 100644
index 00000000..a6233e13
--- /dev/null
+++ b/libs/server/repository/util/tsconfig.json
@@ -0,0 +1,7 @@
+{
+  "extends": "../../../../tsconfig.json",
+  "compilerOptions": {
+    "types": ["node", "jest"]
+  },
+  "include": ["**/*.ts"]
+}
diff --git a/libs/server/repository/util/tsconfig.lib.json b/libs/server/repository/util/tsconfig.lib.json
new file mode 100644
index 00000000..290e7bc9
--- /dev/null
+++ b/libs/server/repository/util/tsconfig.lib.json
@@ -0,0 +1,17 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "../../../../dist/out-tsc",
+    "target": "es2015",
+    "declaration": true,
+    "inlineSources": true,
+    "types": [],
+    "lib": ["dom", "es2018"]
+  },
+  "angularCompilerOptions": {
+    "skipTemplateCodegen": true,
+    "strictMetadataEmit": true,
+    "enableResourceInlining": true
+  },
+  "exclude": ["src/test-setup.ts", "**/*.spec.ts"]
+}
diff --git a/libs/server/repository/util/tsconfig.spec.json b/libs/server/repository/util/tsconfig.spec.json
new file mode 100644
index 00000000..aed68bc6
--- /dev/null
+++ b/libs/server/repository/util/tsconfig.spec.json
@@ -0,0 +1,10 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "../../../../dist/out-tsc",
+    "module": "commonjs",
+    "types": ["jest", "node"]
+  },
+  "files": ["src/test-setup.ts"],
+  "include": ["**/*.spec.ts", "**/*.d.ts"]
+}
diff --git a/libs/server/repository/util/tslint.json b/libs/server/repository/util/tslint.json
new file mode 100644
index 00000000..b12cab6f
--- /dev/null
+++ b/libs/server/repository/util/tslint.json
@@ -0,0 +1,10 @@
+{
+  "extends": "../../../../tslint.json",
+  "rules": {
+    "directive-selector": [true, "attribute", "pimpMyPr", "camelCase"],
+    "component-selector": [true, "element", "pimp-my-pr", "kebab-case"]
+  },
+  "linterOptions": {
+    "exclude": ["!**/*"]
+  }
+}
diff --git a/libs/shared/domain/src/index.ts b/libs/shared/domain/src/index.ts
index 9e04872a..f0ce553b 100644
--- a/libs/shared/domain/src/index.ts
+++ b/libs/shared/domain/src/index.ts
@@ -1,6 +1,7 @@
 export * from './lib/enums/http-status-codes.enum';
 export * from './lib/enums/platform.enum';
 export * from './lib/enums/time-unit.enum';
+export * from './lib/enums/timeline-step.enum';
 export * from './lib/interfaces/hal-link.interface';
 export * from './lib/interfaces/hal-resource.interface';
 export * from './lib/interfaces/login-success-payload';
@@ -20,3 +21,4 @@ export * from './lib/responses/login-success.response';
 export * from './lib/responses/response.interface';
 export * from './lib/responses/reviewer-statistics.response';
 export * from './lib/responses/user-info.response';
+export * from './lib/util/url-with-query-params.util';
diff --git a/libs/shared/domain/src/lib/enums/timeline-step.enum.ts b/libs/shared/domain/src/lib/enums/timeline-step.enum.ts
new file mode 100644
index 00000000..4958f108
--- /dev/null
+++ b/libs/shared/domain/src/lib/enums/timeline-step.enum.ts
@@ -0,0 +1,7 @@
+export enum TimelineStep {
+  DAY = 'day',
+  MONTH = 'month',
+  WEEK = 'week',
+  QUARTER = 'quarter',
+  YEAR = 'year'
+}
diff --git a/libs/shared/domain/src/lib/util/url-with-query-params.util.spec.ts b/libs/shared/domain/src/lib/util/url-with-query-params.util.spec.ts
new file mode 100644
index 00000000..96e0a012
--- /dev/null
+++ b/libs/shared/domain/src/lib/util/url-with-query-params.util.spec.ts
@@ -0,0 +1,13 @@
+import { urlWithQueryParams } from '@pimp-my-pr/shared/domain';
+
+describe('#urlWithQueryParams', () => {
+  it('should return correct url with params', () => {
+    expect(
+      urlWithQueryParams('url.com', {
+        a: 1,
+        b: 'test',
+        c: true
+      })
+    ).toBe('url.com?a=1&b=test&c=true');
+  });
+});
diff --git a/libs/shared/domain/src/lib/util/url-with-query-params.util.ts b/libs/shared/domain/src/lib/util/url-with-query-params.util.ts
new file mode 100644
index 00000000..93768796
--- /dev/null
+++ b/libs/shared/domain/src/lib/util/url-with-query-params.util.ts
@@ -0,0 +1,11 @@
+export const urlWithQueryParams = (
+  url: string,
+  queryParams: { [key: string]: number | string | boolean }
+) => {
+  return Object.entries(queryParams).reduce((total, current, ind, arr) => {
+    if (ind === 0) total += '?';
+    total += current.join('=');
+    if (ind !== arr.length - 1) total += '&';
+    return total;
+  }, url);
+};
diff --git a/nx.json b/nx.json
index fc77bb76..326e5237 100644
--- a/nx.json
+++ b/nx.json
@@ -223,6 +223,9 @@
     },
     "pmp-web-shell": {
       "tags": ["platform:web", "scope:pmp-web", "type:shell"]
+    },
+    "server-repository-util": {
+      "tags": ["scope:repository", "type:util", "platform:api"]
     }
   },
   "tasksRunnerOptions": {
diff --git a/tsconfig.json b/tsconfig.json
index d0e2a6ce..735c86f5 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -152,7 +152,8 @@
       "@pimp-my-pr/pmp-web/shared/styles": ["libs/pmp-web/shared/styles/src/index.ts"],
       "@pimp-my-pr/pmp-web/shared/util-google-analytics": [
         "libs/pmp-web/shared/util-google-analytics/src/index.ts"
-      ]
+      ],
+      "@pimp-my-pr/server/repository/util": ["libs/server/repository/util/src/index.ts"]
     }
   },
   "exclude": ["node_modules", "tmp"]