diff --git a/src/modules/ad/ad.di-tokens.ts b/src/modules/ad/ad.di-tokens.ts
index 6ad4746..de012d0 100644
--- a/src/modules/ad/ad.di-tokens.ts
+++ b/src/modules/ad/ad.di-tokens.ts
@@ -2,5 +2,8 @@ export const AD_MESSAGE_PUBLISHER = Symbol('AD_MESSAGE_PUBLISHER');
 export const PARAMS_PROVIDER = Symbol('PARAMS_PROVIDER');
 export const TIMEZONE_FINDER = Symbol('TIMEZONE_FINDER');
 export const TIME_CONVERTER = Symbol('TIME_CONVERTER');
-export const DATETIME_TRANSFORMER = Symbol('DATETIME_TRANSFORMER');
+export const INPUT_DATETIME_TRANSFORMER = Symbol('INPUT_DATETIME_TRANSFORMER');
+export const OUTPUT_DATETIME_TRANSFORMER = Symbol(
+  'OUTPUT_DATETIME_TRANSFORMER',
+);
 export const AD_REPOSITORY = Symbol('AD_REPOSITORY');
diff --git a/src/modules/ad/ad.mapper.ts b/src/modules/ad/ad.mapper.ts
index 897c41d..47902bc 100644
--- a/src/modules/ad/ad.mapper.ts
+++ b/src/modules/ad/ad.mapper.ts
@@ -1,6 +1,6 @@
 import { Mapper } from '@mobicoop/ddd-library';
 import { AdResponseDto } from './interface/dtos/ad.response.dto';
-import { Injectable } from '@nestjs/common';
+import { Inject, Injectable } from '@nestjs/common';
 import { AdEntity } from './core/domain/ad.entity';
 import {
   AdWriteModel,
@@ -12,6 +12,8 @@ import { Frequency } from './core/domain/ad.types';
 import { WaypointProps } from './core/domain/value-objects/waypoint.value-object';
 import { v4 } from 'uuid';
 import { ScheduleItemProps } from './core/domain/value-objects/schedule-item.value-object';
+import { OUTPUT_DATETIME_TRANSFORMER } from './ad.di-tokens';
+import { DateTimeTransformerPort } from './core/application/ports/datetime-transformer.port';
 
 /**
  * Mapper constructs objects that are used in different layers:
@@ -24,6 +26,11 @@ import { ScheduleItemProps } from './core/domain/value-objects/schedule-item.val
 export class AdMapper
   implements Mapper<AdEntity, AdReadModel, AdWriteModel, AdResponseDto>
 {
+  constructor(
+    @Inject(OUTPUT_DATETIME_TRANSFORMER)
+    private readonly outputDatetimeTransformer: DateTimeTransformerPort,
+  ) {}
+
   toPersistence = (entity: AdEntity): AdWriteModel => {
     const copy = entity.getProps();
     const now = new Date();
@@ -129,12 +136,42 @@ export class AdMapper
     response.driver = props.driver;
     response.passenger = props.passenger;
     response.frequency = props.frequency;
-    response.fromDate = props.fromDate;
-    response.toDate = props.toDate;
+    response.fromDate = this.outputDatetimeTransformer.fromDate(
+      {
+        date: props.fromDate,
+        time: props.schedule[0].time,
+        coordinates: props.waypoints[0].address.coordinates,
+      },
+      props.frequency,
+    );
+    response.toDate = this.outputDatetimeTransformer.toDate(
+      props.toDate,
+      {
+        date: props.fromDate,
+        time: props.schedule[0].time,
+        coordinates: props.waypoints[0].address.coordinates,
+      },
+      props.frequency,
+    );
     response.schedule = props.schedule.map(
       (scheduleItem: ScheduleItemProps) => ({
-        day: scheduleItem.day,
-        time: scheduleItem.time,
+        day: this.outputDatetimeTransformer.day(
+          scheduleItem.day,
+          {
+            date: props.fromDate,
+            time: scheduleItem.time,
+            coordinates: props.waypoints[0].address.coordinates,
+          },
+          props.frequency,
+        ),
+        time: this.outputDatetimeTransformer.time(
+          {
+            date: props.fromDate,
+            time: scheduleItem.time,
+            coordinates: props.waypoints[0].address.coordinates,
+          },
+          props.frequency,
+        ),
         margin: scheduleItem.margin,
       }),
     );
diff --git a/src/modules/ad/ad.module.ts b/src/modules/ad/ad.module.ts
index 6ae54a6..915b7db 100644
--- a/src/modules/ad/ad.module.ts
+++ b/src/modules/ad/ad.module.ts
@@ -4,7 +4,8 @@ import { CqrsModule } from '@nestjs/cqrs';
 import {
   AD_MESSAGE_PUBLISHER,
   AD_REPOSITORY,
-  DATETIME_TRANSFORMER,
+  INPUT_DATETIME_TRANSFORMER,
+  OUTPUT_DATETIME_TRANSFORMER,
   PARAMS_PROVIDER,
   TIMEZONE_FINDER,
   TIME_CONVERTER,
@@ -20,7 +21,8 @@ import { FindAdByIdQueryHandler } from './core/application/queries/find-ad-by-id
 import { PublishMessageWhenAdIsCreatedDomainEventHandler } from './core/application/event-handlers/publish-message-when-ad-is-created.domain-event-handler';
 import { PrismaService } from './infrastructure/prisma.service';
 import { MessageBrokerPublisher } from '@mobicoop/message-broker-module';
-import { DateTimeTransformer } from './infrastructure/datetime-transformer';
+import { InputDateTimeTransformer } from './infrastructure/input-datetime-transformer';
+import { OutputDateTimeTransformer } from './infrastructure/output-datetime-transformer';
 
 const grpcControllers = [CreateAdGrpcController, FindAdByIdGrpcController];
 
@@ -63,8 +65,12 @@ const adapters: Provider[] = [
     useClass: TimeConverter,
   },
   {
-    provide: DATETIME_TRANSFORMER,
-    useClass: DateTimeTransformer,
+    provide: INPUT_DATETIME_TRANSFORMER,
+    useClass: InputDateTimeTransformer,
+  },
+  {
+    provide: OUTPUT_DATETIME_TRANSFORMER,
+    useClass: OutputDateTimeTransformer,
   },
 ];
 
diff --git a/src/modules/ad/core/application/commands/create-ad/create-ad.service.ts b/src/modules/ad/core/application/commands/create-ad/create-ad.service.ts
index 6d15807..cc9fbf7 100644
--- a/src/modules/ad/core/application/commands/create-ad/create-ad.service.ts
+++ b/src/modules/ad/core/application/commands/create-ad/create-ad.service.ts
@@ -3,7 +3,7 @@ import { CreateAdCommand } from './create-ad.command';
 import { Inject } from '@nestjs/common';
 import {
   AD_REPOSITORY,
-  DATETIME_TRANSFORMER,
+  INPUT_DATETIME_TRANSFORMER,
   PARAMS_PROVIDER,
 } from '@modules/ad/ad.di-tokens';
 import { AdEntity } from '@modules/ad/core/domain/ad.entity';
@@ -25,7 +25,7 @@ export class CreateAdService implements ICommandHandler {
     private readonly repository: AdRepositoryPort,
     @Inject(PARAMS_PROVIDER)
     private readonly defaultParamsProvider: DefaultParamsProviderPort,
-    @Inject(DATETIME_TRANSFORMER)
+    @Inject(INPUT_DATETIME_TRANSFORMER)
     private readonly datetimeTransformer: DateTimeTransformerPort,
   ) {
     this._defaultParams = defaultParamsProvider.getParams();
diff --git a/src/modules/ad/core/application/ports/time-converter.port.ts b/src/modules/ad/core/application/ports/time-converter.port.ts
index e981717..112340f 100644
--- a/src/modules/ad/core/application/ports/time-converter.port.ts
+++ b/src/modules/ad/core/application/ports/time-converter.port.ts
@@ -1,10 +1,18 @@
 export interface TimeConverterPort {
   localStringTimeToUtcStringTime(time: string, timezone: string): string;
+  utcStringTimeToLocalStringTime(time: string, timezone: string): string;
   localStringDateTimeToUtcDate(
     date: string,
     time: string,
     timezone: string,
     dst?: boolean,
   ): Date;
+  utcStringDateTimeToLocalIsoString(
+    date: string,
+    time: string,
+    timezone: string,
+    dst?: boolean,
+  ): string;
   utcUnixEpochDayFromTime(time: string, timezone: string): number;
+  localUnixEpochDayFromTime(time: string, timezone: string): number;
 }
diff --git a/src/modules/ad/core/application/queries/find-ad-by-id/find-ad-by-id.query-handler.ts b/src/modules/ad/core/application/queries/find-ad-by-id/find-ad-by-id.query-handler.ts
index b036085..a19a67e 100644
--- a/src/modules/ad/core/application/queries/find-ad-by-id/find-ad-by-id.query-handler.ts
+++ b/src/modules/ad/core/application/queries/find-ad-by-id/find-ad-by-id.query-handler.ts
@@ -12,6 +12,9 @@ export class FindAdByIdQueryHandler implements IQueryHandler {
     private readonly repository: AdRepositoryPort,
   ) {}
   async execute(query: FindAdByIdQuery): Promise<AdEntity> {
-    return await this.repository.findOneById(query.id, { waypoints: true });
+    return await this.repository.findOneById(query.id, {
+      waypoints: true,
+      schedule: true,
+    });
   }
 }
diff --git a/src/modules/ad/infrastructure/datetime-transformer.ts b/src/modules/ad/infrastructure/input-datetime-transformer.ts
similarity index 98%
rename from src/modules/ad/infrastructure/datetime-transformer.ts
rename to src/modules/ad/infrastructure/input-datetime-transformer.ts
index f8aa497..faa4025 100644
--- a/src/modules/ad/infrastructure/datetime-transformer.ts
+++ b/src/modules/ad/infrastructure/input-datetime-transformer.ts
@@ -14,7 +14,7 @@ import { TimezoneFinderPort } from '../core/application/ports/timezone-finder.po
 import { DefaultParamsProviderPort } from '../core/application/ports/default-params-provider.port';
 
 @Injectable()
-export class DateTimeTransformer implements DateTimeTransformerPort {
+export class InputDateTimeTransformer implements DateTimeTransformerPort {
   private readonly _defaultTimezone: string;
   constructor(
     @Inject(PARAMS_PROVIDER)
diff --git a/src/modules/ad/infrastructure/output-datetime-transformer.ts b/src/modules/ad/infrastructure/output-datetime-transformer.ts
new file mode 100644
index 0000000..d2d44be
--- /dev/null
+++ b/src/modules/ad/infrastructure/output-datetime-transformer.ts
@@ -0,0 +1,116 @@
+import { Inject, Injectable } from '@nestjs/common';
+import {
+  DateTimeTransformerPort,
+  Frequency,
+  GeoDateTime,
+} from '../core/application/ports/datetime-transformer.port';
+import { TimeConverterPort } from '../core/application/ports/time-converter.port';
+import { TIMEZONE_FINDER, TIME_CONVERTER } from '../ad.di-tokens';
+import { TimezoneFinderPort } from '../core/application/ports/timezone-finder.port';
+
+@Injectable()
+export class OutputDateTimeTransformer implements DateTimeTransformerPort {
+  constructor(
+    @Inject(TIMEZONE_FINDER)
+    private readonly timezoneFinder: TimezoneFinderPort,
+    @Inject(TIME_CONVERTER) private readonly timeConverter: TimeConverterPort,
+  ) {}
+
+  /**
+   * Compute the fromDate : if an ad is punctual, the departure date
+   * is converted from UTC to the local date with the time and timezone
+   */
+  fromDate = (geoFromDate: GeoDateTime, frequency: Frequency): string => {
+    if (frequency === Frequency.RECURRENT) return geoFromDate.date;
+    return this.timeConverter
+      .utcStringDateTimeToLocalIsoString(
+        geoFromDate.date,
+        geoFromDate.time,
+        this.timezoneFinder.timezones(
+          geoFromDate.coordinates.lon,
+          geoFromDate.coordinates.lat,
+        )[0],
+      )
+      .split('T')[0];
+  };
+
+  /**
+   * Get the toDate depending on frequency, time and timezone :
+   * if the ad is punctual, the toDate is equal to the fromDate
+   */
+  toDate = (
+    toDate: string,
+    geoFromDate: GeoDateTime,
+    frequency: Frequency,
+  ): string => {
+    if (frequency === Frequency.RECURRENT) return toDate;
+    return this.fromDate(geoFromDate, frequency);
+  };
+
+  /**
+   * Get the day for a schedule item :
+   * - if the ad is punctual, the day is infered from fromDate
+   * - if the ad is recurrent, the day is computed by converting the time from utc to local time
+   */
+  day = (
+    day: number,
+    geoFromDate: GeoDateTime,
+    frequency: Frequency,
+  ): number => {
+    if (frequency === Frequency.RECURRENT)
+      return this.recurrentDay(
+        day,
+        geoFromDate.time,
+        this.timezoneFinder.timezones(
+          geoFromDate.coordinates.lon,
+          geoFromDate.coordinates.lat,
+        )[0],
+      );
+    return new Date(this.fromDate(geoFromDate, frequency)).getDay();
+  };
+
+  /**
+   * Get the utc time
+   */
+  time = (geoFromDate: GeoDateTime, frequency: Frequency): string => {
+    if (frequency === Frequency.RECURRENT)
+      return this.timeConverter.utcStringTimeToLocalStringTime(
+        geoFromDate.time,
+        this.timezoneFinder.timezones(
+          geoFromDate.coordinates.lon,
+          geoFromDate.coordinates.lat,
+        )[0],
+      );
+    return this.timeConverter
+      .utcStringDateTimeToLocalIsoString(
+        geoFromDate.date,
+        geoFromDate.time,
+        this.timezoneFinder.timezones(
+          geoFromDate.coordinates.lon,
+          geoFromDate.coordinates.lat,
+        )[0],
+      )
+      .split('T')[1]
+      .split(':', 2)
+      .join(':');
+  };
+
+  /**
+   * Get the day for a schedule item for a recurrent ad
+   * The day may change when transforming from utc to local timezone
+   */
+  private recurrentDay = (
+    day: number,
+    time: string,
+    timezone: string,
+  ): number => {
+    const unixEpochDay = 4; // 1970-01-01 is a thursday !
+    const localBaseDay = this.timeConverter.localUnixEpochDayFromTime(
+      time,
+      timezone,
+    );
+    if (unixEpochDay == localBaseDay) return day;
+    if (unixEpochDay > localBaseDay) return day > 0 ? day - 1 : 6;
+    return day < 6 ? day + 1 : 0;
+  };
+}
diff --git a/src/modules/ad/infrastructure/time-converter.ts b/src/modules/ad/infrastructure/time-converter.ts
index 1a54b40..a08ac63 100644
--- a/src/modules/ad/infrastructure/time-converter.ts
+++ b/src/modules/ad/infrastructure/time-converter.ts
@@ -17,6 +17,17 @@ export class TimeConverter implements TimeConverterPort {
     }
   };
 
+  utcStringTimeToLocalStringTime = (time: string, timezone: string): string => {
+    try {
+      if (!time || !timezone) throw new Error();
+      return new DateTime(`${this.UNIX_EPOCH}T${time}`, TimeZone.zone('UTC'))
+        .convert(TimeZone.zone(timezone))
+        .format('HH:mm');
+    } catch (e) {
+      return undefined;
+    }
+  };
+
   localStringDateTimeToUtcDate = (
     date: string,
     time: string,
@@ -24,7 +35,7 @@ export class TimeConverter implements TimeConverterPort {
     dst = true,
   ): Date => {
     try {
-      if (!time || !timezone) throw new Error();
+      if (!date || !time || !timezone) throw new Error();
       return new Date(
         new DateTime(
           `${date}T${time}`,
@@ -36,6 +47,22 @@ export class TimeConverter implements TimeConverterPort {
     }
   };
 
+  utcStringDateTimeToLocalIsoString = (
+    date: string,
+    time: string,
+    timezone: string,
+    dst?: boolean,
+  ): string => {
+    try {
+      if (!date || !time || !timezone) throw new Error();
+      return new DateTime(`${date}T${time}`, TimeZone.zone('UTC'))
+        .convert(TimeZone.zone(timezone, dst))
+        .toIsoString();
+    } catch (e) {
+      return undefined;
+    }
+  };
+
   utcUnixEpochDayFromTime = (time: string, timezone: string): number => {
     try {
       if (!time || !timezone) throw new Error();
@@ -52,4 +79,18 @@ export class TimeConverter implements TimeConverterPort {
       return undefined;
     }
   };
+
+  localUnixEpochDayFromTime = (time: string, timezone: string): number => {
+    try {
+      if (!time || !timezone) throw new Error();
+      return new Date(
+        new DateTime(`${this.UNIX_EPOCH}T${time}`, TimeZone.zone('UTC'))
+          .convert(TimeZone.zone(timezone))
+          .toIsoString()
+          .split('T')[0],
+      ).getDay();
+    } catch (e) {
+      return undefined;
+    }
+  };
 }
diff --git a/src/modules/ad/interface/grpc-controllers/ad.proto b/src/modules/ad/interface/grpc-controllers/ad.proto
index 58f84d2..b241574 100644
--- a/src/modules/ad/interface/grpc-controllers/ad.proto
+++ b/src/modules/ad/interface/grpc-controllers/ad.proto
@@ -37,8 +37,8 @@ message ScheduleItem {
 
 message Waypoint {
   int32 position = 1;
-  float lon = 2;
-  float lat = 3;
+  double lon = 2;
+  double lat = 3;
   string name = 4;
   string houseNumber = 5;
   string street = 6;
diff --git a/src/modules/ad/interface/grpc-controllers/dtos/coordinates.dto.ts b/src/modules/ad/interface/grpc-controllers/dtos/coordinates.dto.ts
index 3e622be..cb636ae 100644
--- a/src/modules/ad/interface/grpc-controllers/dtos/coordinates.dto.ts
+++ b/src/modules/ad/interface/grpc-controllers/dtos/coordinates.dto.ts
@@ -1,17 +1,9 @@
-import { Transform } from 'class-transformer';
 import { IsLatitude, IsLongitude } from 'class-validator';
-import { toPrecision } from './transformers/to-precision';
 
 export class CoordinatesDto {
-  @Transform(({ value }) => toPrecision(value, 6), {
-    toClassOnly: true,
-  })
   @IsLongitude()
   lon: number;
 
-  @Transform(({ value }) => toPrecision(value, 6), {
-    toClassOnly: true,
-  })
   @IsLatitude()
   lat: number;
 }
diff --git a/src/modules/ad/interface/grpc-controllers/dtos/transformers/int-to-frequency.ts b/src/modules/ad/interface/grpc-controllers/dtos/transformers/int-to-frequency.ts
deleted file mode 100644
index bd707b7..0000000
--- a/src/modules/ad/interface/grpc-controllers/dtos/transformers/int-to-frequency.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-import { Frequency } from '@modules/ad/core/domain/ad.types';
-
-export const intToFrequency = (frequencyAsInt: number): Frequency => {
-  if (frequencyAsInt == 1) return Frequency.PUNCTUAL;
-  if (frequencyAsInt == 2) return Frequency.RECURRENT;
-  throw new Error('Unknown frequency value');
-};
diff --git a/src/modules/ad/interface/grpc-controllers/dtos/transformers/to-precision.ts b/src/modules/ad/interface/grpc-controllers/dtos/transformers/to-precision.ts
deleted file mode 100644
index 997e89c..0000000
--- a/src/modules/ad/interface/grpc-controllers/dtos/transformers/to-precision.ts
+++ /dev/null
@@ -1,4 +0,0 @@
-export const toPrecision = (input: number, precision: number): number => {
-  const multiplier = 10 ** precision;
-  return Math.round((input + Number.EPSILON) * multiplier) / multiplier;
-};
diff --git a/src/modules/ad/interface/grpc-controllers/find-ad-by-id.grpc.controller.ts b/src/modules/ad/interface/grpc-controllers/find-ad-by-id.grpc.controller.ts
index eb31d19..66d896f 100644
--- a/src/modules/ad/interface/grpc-controllers/find-ad-by-id.grpc.controller.ts
+++ b/src/modules/ad/interface/grpc-controllers/find-ad-by-id.grpc.controller.ts
@@ -23,7 +23,7 @@ export class FindAdByIdGrpcController {
     private readonly queryBus: QueryBus,
   ) {}
 
-  @GrpcMethod('AdsService', 'FindOneById')
+  @GrpcMethod('AdService', 'FindOneById')
   async findOnebyId(data: FindAdByIdRequestDto): Promise<AdResponseDto> {
     try {
       const ad: AdEntity = await this.queryBus.execute(
diff --git a/src/modules/ad/tests/unit/ad.mapper.spec.ts b/src/modules/ad/tests/unit/ad.mapper.spec.ts
index b8cd8a3..e47333a 100644
--- a/src/modules/ad/tests/unit/ad.mapper.spec.ts
+++ b/src/modules/ad/tests/unit/ad.mapper.spec.ts
@@ -1,4 +1,6 @@
+import { OUTPUT_DATETIME_TRANSFORMER } from '@modules/ad/ad.di-tokens';
 import { AdMapper } from '@modules/ad/ad.mapper';
+import { DateTimeTransformerPort } from '@modules/ad/core/application/ports/datetime-transformer.port';
 import { AdEntity } from '@modules/ad/core/domain/ad.entity';
 import { Frequency } from '@modules/ad/core/domain/ad.types';
 import {
@@ -111,12 +113,25 @@ const adReadModel: AdReadModel = {
   updatedAt: now,
 };
 
+const mockOutputDatetimeTransformer: DateTimeTransformerPort = {
+  fromDate: jest.fn(),
+  toDate: jest.fn(),
+  day: jest.fn(),
+  time: jest.fn(),
+};
+
 describe('Ad Mapper', () => {
   let adMapper: AdMapper;
 
   beforeAll(async () => {
     const module = await Test.createTestingModule({
-      providers: [AdMapper],
+      providers: [
+        AdMapper,
+        {
+          provide: OUTPUT_DATETIME_TRANSFORMER,
+          useValue: mockOutputDatetimeTransformer,
+        },
+      ],
     }).compile();
     adMapper = module.get<AdMapper>(AdMapper);
   });
diff --git a/src/modules/ad/tests/unit/core/create-ad.service.spec.ts b/src/modules/ad/tests/unit/core/create-ad.service.spec.ts
index 0f99875..9e4982a 100644
--- a/src/modules/ad/tests/unit/core/create-ad.service.spec.ts
+++ b/src/modules/ad/tests/unit/core/create-ad.service.spec.ts
@@ -1,7 +1,7 @@
 import { Test, TestingModule } from '@nestjs/testing';
 import {
   AD_REPOSITORY,
-  DATETIME_TRANSFORMER,
+  INPUT_DATETIME_TRANSFORMER,
   PARAMS_PROVIDER,
 } from '@modules/ad/ad.di-tokens';
 import { WaypointDto } from '@modules/ad/interface/grpc-controllers/dtos/waypoint.dto';
@@ -76,7 +76,7 @@ const mockDefaultParamsProvider: DefaultParamsProviderPort = {
   },
 };
 
-const mockDateTimeTransformer: DateTimeTransformerPort = {
+const mockInputDateTimeTransformer: DateTimeTransformerPort = {
   fromDate: jest.fn(),
   toDate: jest.fn(),
   day: jest.fn(),
@@ -98,8 +98,8 @@ describe('create-ad.service', () => {
           useValue: mockDefaultParamsProvider,
         },
         {
-          provide: DATETIME_TRANSFORMER,
-          useValue: mockDateTimeTransformer,
+          provide: INPUT_DATETIME_TRANSFORMER,
+          useValue: mockInputDateTimeTransformer,
         },
         CreateAdService,
       ],
diff --git a/src/modules/ad/tests/unit/infrastructure/ad.repository.spec.ts b/src/modules/ad/tests/unit/infrastructure/ad.repository.spec.ts
index 43ed4ac..7c5f45a 100644
--- a/src/modules/ad/tests/unit/infrastructure/ad.repository.spec.ts
+++ b/src/modules/ad/tests/unit/infrastructure/ad.repository.spec.ts
@@ -1,4 +1,6 @@
+import { OUTPUT_DATETIME_TRANSFORMER } from '@modules/ad/ad.di-tokens';
 import { AdMapper } from '@modules/ad/ad.mapper';
+import { DateTimeTransformerPort } from '@modules/ad/core/application/ports/datetime-transformer.port';
 import { AdRepository } from '@modules/ad/infrastructure/ad.repository';
 import { PrismaService } from '@modules/ad/infrastructure/prisma.service';
 import { EventEmitter2, EventEmitterModule } from '@nestjs/event-emitter';
@@ -8,6 +10,13 @@ const mockMessagePublisher = {
   publish: jest.fn().mockImplementation(),
 };
 
+const mockOutputDatetimeTransformer: DateTimeTransformerPort = {
+  fromDate: jest.fn(),
+  toDate: jest.fn(),
+  day: jest.fn(),
+  time: jest.fn(),
+};
+
 describe('Ad repository', () => {
   let prismaService: PrismaService;
   let adMapper: AdMapper;
@@ -16,7 +25,14 @@ describe('Ad repository', () => {
   beforeAll(async () => {
     const module: TestingModule = await Test.createTestingModule({
       imports: [EventEmitterModule.forRoot()],
-      providers: [PrismaService, AdMapper],
+      providers: [
+        PrismaService,
+        AdMapper,
+        {
+          provide: OUTPUT_DATETIME_TRANSFORMER,
+          useValue: mockOutputDatetimeTransformer,
+        },
+      ],
     }).compile();
 
     prismaService = module.get<PrismaService>(PrismaService);
diff --git a/src/modules/ad/tests/unit/infrastructure/datetime-transformer.spec.ts b/src/modules/ad/tests/unit/infrastructure/input-datetime-transformer.spec.ts
similarity index 83%
rename from src/modules/ad/tests/unit/infrastructure/datetime-transformer.spec.ts
rename to src/modules/ad/tests/unit/infrastructure/input-datetime-transformer.spec.ts
index c2192f4..11733a0 100644
--- a/src/modules/ad/tests/unit/infrastructure/datetime-transformer.spec.ts
+++ b/src/modules/ad/tests/unit/infrastructure/input-datetime-transformer.spec.ts
@@ -7,7 +7,7 @@ import { Frequency } from '@modules/ad/core/application/ports/datetime-transform
 import { DefaultParamsProviderPort } from '@modules/ad/core/application/ports/default-params-provider.port';
 import { TimeConverterPort } from '@modules/ad/core/application/ports/time-converter.port';
 import { TimezoneFinderPort } from '@modules/ad/core/application/ports/timezone-finder.port';
-import { DateTimeTransformer } from '@modules/ad/infrastructure/datetime-transformer';
+import { InputDateTimeTransformer } from '@modules/ad/infrastructure/input-datetime-transformer';
 import { Test, TestingModule } from '@nestjs/testing';
 
 const mockDefaultParamsProvider: DefaultParamsProviderPort = {
@@ -32,12 +32,14 @@ const mockTimeConverter: TimeConverterPort = {
   localStringTimeToUtcStringTime: jest
     .fn()
     .mockImplementationOnce(() => '00:15'),
+  utcStringTimeToLocalStringTime: jest.fn(),
   localStringDateTimeToUtcDate: jest
     .fn()
     .mockImplementationOnce(() => new Date('2023-07-30T06:15:00.000Z'))
     .mockImplementationOnce(() => new Date('2023-07-20T08:15:00.000Z'))
     .mockImplementationOnce(() => new Date('2023-07-19T23:15:00.000Z'))
     .mockImplementationOnce(() => new Date('2023-07-19T23:15:00.000Z')),
+  utcStringDateTimeToLocalIsoString: jest.fn(),
   utcUnixEpochDayFromTime: jest
     .fn()
     .mockImplementationOnce(() => 4)
@@ -45,10 +47,11 @@ const mockTimeConverter: TimeConverterPort = {
     .mockImplementationOnce(() => 3)
     .mockImplementationOnce(() => 5)
     .mockImplementationOnce(() => 5),
+  localUnixEpochDayFromTime: jest.fn(),
 };
 
-describe('Datetime Transformer', () => {
-  let datetimeTransformer: DateTimeTransformer;
+describe('Input Datetime Transformer', () => {
+  let inputDatetimeTransformer: InputDateTimeTransformer;
 
   beforeAll(async () => {
     const module: TestingModule = await Test.createTestingModule({
@@ -65,20 +68,22 @@ describe('Datetime Transformer', () => {
           provide: TIME_CONVERTER,
           useValue: mockTimeConverter,
         },
-        DateTimeTransformer,
+        InputDateTimeTransformer,
       ],
     }).compile();
 
-    datetimeTransformer = module.get<DateTimeTransformer>(DateTimeTransformer);
+    inputDatetimeTransformer = module.get<InputDateTimeTransformer>(
+      InputDateTimeTransformer,
+    );
   });
 
   it('should be defined', () => {
-    expect(datetimeTransformer).toBeDefined();
+    expect(inputDatetimeTransformer).toBeDefined();
   });
 
   describe('fromDate', () => {
     it('should return fromDate as is if frequency is recurrent', () => {
-      const transformedFromDate: string = datetimeTransformer.fromDate(
+      const transformedFromDate: string = inputDatetimeTransformer.fromDate(
         {
           date: '2023-07-30',
           time: '07:15',
@@ -92,7 +97,7 @@ describe('Datetime Transformer', () => {
       expect(transformedFromDate).toBe('2023-07-30');
     });
     it('should return transformed fromDate if frequency is punctual and coordinates are those of Nancy', () => {
-      const transformedFromDate: string = datetimeTransformer.fromDate(
+      const transformedFromDate: string = inputDatetimeTransformer.fromDate(
         {
           date: '2023-07-30',
           time: '07:15',
@@ -109,7 +114,7 @@ describe('Datetime Transformer', () => {
 
   describe('toDate', () => {
     it('should return toDate as is if frequency is recurrent', () => {
-      const transformedToDate: string = datetimeTransformer.toDate(
+      const transformedToDate: string = inputDatetimeTransformer.toDate(
         '2024-07-29',
         {
           date: '2023-07-20',
@@ -124,7 +129,7 @@ describe('Datetime Transformer', () => {
       expect(transformedToDate).toBe('2024-07-29');
     });
     it('should return transformed fromDate if frequency is punctual', () => {
-      const transformedToDate: string = datetimeTransformer.toDate(
+      const transformedToDate: string = inputDatetimeTransformer.toDate(
         '2024-07-30',
         {
           date: '2023-07-20',
@@ -142,7 +147,7 @@ describe('Datetime Transformer', () => {
 
   describe('day', () => {
     it('should not change day if frequency is recurrent and converted UTC time is on the same day', () => {
-      const day: number = datetimeTransformer.day(
+      const day: number = inputDatetimeTransformer.day(
         1,
         {
           date: '2023-07-24',
@@ -157,7 +162,7 @@ describe('Datetime Transformer', () => {
       expect(day).toBe(1);
     });
     it('should change day if frequency is recurrent and converted UTC time is on the previous day', () => {
-      const day: number = datetimeTransformer.day(
+      const day: number = inputDatetimeTransformer.day(
         1,
         {
           date: '2023-07-24',
@@ -172,7 +177,7 @@ describe('Datetime Transformer', () => {
       expect(day).toBe(0);
     });
     it('should change day if frequency is recurrent and converted UTC time is on the previous day and given day is sunday', () => {
-      const day: number = datetimeTransformer.day(
+      const day: number = inputDatetimeTransformer.day(
         0,
         {
           date: '2023-07-23',
@@ -187,7 +192,7 @@ describe('Datetime Transformer', () => {
       expect(day).toBe(6);
     });
     it('should change day if frequency is recurrent and converted UTC time is on the next day', () => {
-      const day: number = datetimeTransformer.day(
+      const day: number = inputDatetimeTransformer.day(
         1,
         {
           date: '2023-07-24',
@@ -202,7 +207,7 @@ describe('Datetime Transformer', () => {
       expect(day).toBe(2);
     });
     it('should change day if frequency is recurrent and converted UTC time is on the next day and given day is saturday(6)', () => {
-      const day: number = datetimeTransformer.day(
+      const day: number = inputDatetimeTransformer.day(
         6,
         {
           date: '2023-07-29',
@@ -217,7 +222,7 @@ describe('Datetime Transformer', () => {
       expect(day).toBe(0);
     });
     it('should return utc fromDate day if frequency is punctual', () => {
-      const day: number = datetimeTransformer.day(
+      const day: number = inputDatetimeTransformer.day(
         1,
         {
           date: '2023-07-20',
@@ -235,7 +240,7 @@ describe('Datetime Transformer', () => {
 
   describe('time', () => {
     it('should transform given time to utc time if frequency is recurrent', () => {
-      const time: string = datetimeTransformer.time(
+      const time: string = inputDatetimeTransformer.time(
         {
           date: '2023-07-24',
           time: '01:15',
@@ -249,7 +254,7 @@ describe('Datetime Transformer', () => {
       expect(time).toBe('00:15');
     });
     it('should return given time to utc time if frequency is punctual', () => {
-      const time: string = datetimeTransformer.time(
+      const time: string = inputDatetimeTransformer.time(
         {
           date: '2023-07-24',
           time: '01:15',
diff --git a/src/modules/ad/tests/unit/infrastructure/time-converter.spec.ts b/src/modules/ad/tests/unit/infrastructure/time-converter.spec.ts
index eaf6361..bdfee03 100644
--- a/src/modules/ad/tests/unit/infrastructure/time-converter.spec.ts
+++ b/src/modules/ad/tests/unit/infrastructure/time-converter.spec.ts
@@ -54,6 +54,54 @@ describe('Time Converter', () => {
     });
   });
 
+  describe('utcStringTimeToLocalStringTime', () => {
+    it('should convert a utc time to a paris time', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      const utcTime = '07:00';
+      const parisTime = timeConverter.utcStringTimeToLocalStringTime(
+        utcTime,
+        'Europe/Paris',
+      );
+      expect(parisTime).toBe('08:00');
+    });
+    it('should return undefined if time is invalid', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      const utcTime = '27:00';
+      const parisTime = timeConverter.utcStringTimeToLocalStringTime(
+        utcTime,
+        'Europe/Paris',
+      );
+      expect(parisTime).toBeUndefined();
+    });
+    it('should return undefined if time is undefined', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      const utcTime = undefined;
+      const parisTime = timeConverter.utcStringTimeToLocalStringTime(
+        utcTime,
+        'Europe/Paris',
+      );
+      expect(parisTime).toBeUndefined();
+    });
+    it('should return undefined if timezone is invalid', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      const utcTime = '07:00';
+      const parisTime = timeConverter.utcStringTimeToLocalStringTime(
+        utcTime,
+        'Foo/Bar',
+      );
+      expect(parisTime).toBeUndefined();
+    });
+    it('should return undefined if timezone is undefined', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      const utcTime = '07:00';
+      const parisTime = timeConverter.utcStringTimeToLocalStringTime(
+        utcTime,
+        undefined,
+      );
+      expect(parisTime).toBeUndefined();
+    });
+  });
+
   describe('localStringDateTimeToUtcDate', () => {
     it('should convert a summer paris date and time to a utc date', () => {
       const timeConverter: TimeConverter = new TimeConverter();
@@ -111,6 +159,28 @@ describe('Time Converter', () => {
       );
       expect(utcDate.toISOString()).toBe('2023-02-03T01:00:00.000Z');
     });
+    it('should return undefined if date is invalid', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      const parisDate = '2023-06-32';
+      const parisTime = '08:00';
+      const utcDate = timeConverter.localStringDateTimeToUtcDate(
+        parisDate,
+        parisTime,
+        'Europe/Paris',
+      );
+      expect(utcDate).toBeUndefined();
+    });
+    it('should return undefined if date is undefined', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      const parisDate = undefined;
+      const parisTime = '08:00';
+      const utcDate = timeConverter.localStringDateTimeToUtcDate(
+        parisDate,
+        parisTime,
+        'Europe/Paris',
+      );
+      expect(utcDate).toBeUndefined();
+    });
     it('should return undefined if time is invalid', () => {
       const timeConverter: TimeConverter = new TimeConverter();
       const parisDate = '2023-06-22';
@@ -157,7 +227,132 @@ describe('Time Converter', () => {
     });
   });
 
-  describe('utcBaseDayFromTime', () => {
+  describe('utcStringDateTimeToLocalIsoString', () => {
+    it('should convert a utc string date and time to a summer paris date isostring', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      const utcDate = '2023-06-22';
+      const utcTime = '10:00';
+      const localIsoString = timeConverter.utcStringDateTimeToLocalIsoString(
+        utcDate,
+        utcTime,
+        'Europe/Paris',
+      );
+      expect(localIsoString).toBe('2023-06-22T12:00:00.000+02:00');
+    });
+    it('should convert a utc string date and time to a winter paris date isostring', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      const utcDate = '2023-02-02';
+      const utcTime = '10:00';
+      const localIsoString = timeConverter.utcStringDateTimeToLocalIsoString(
+        utcDate,
+        utcTime,
+        'Europe/Paris',
+      );
+      expect(localIsoString).toBe('2023-02-02T11:00:00.000+01:00');
+    });
+    it('should convert a utc string date and time to a summer paris date isostring without dst', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      const utcDate = '2023-06-22';
+      const utcTime = '10:00';
+      const localIsoString = timeConverter.utcStringDateTimeToLocalIsoString(
+        utcDate,
+        utcTime,
+        'Europe/Paris',
+        false,
+      );
+      expect(localIsoString).toBe('2023-06-22T11:00:00.000+01:00');
+    });
+    it('should convert a utc date to a tonga date isostring', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      const utcDate = '2023-02-01';
+      const utcTime = '23:00';
+      const localIsoString = timeConverter.utcStringDateTimeToLocalIsoString(
+        utcDate,
+        utcTime,
+        'Pacific/Tongatapu',
+      );
+      expect(localIsoString).toBe('2023-02-02T12:00:00.000+13:00');
+    });
+    it('should convert a utc date to a papeete date isostring', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      const utcDate = '2023-02-03';
+      const utcTime = '01:00';
+      const localIsoString = timeConverter.utcStringDateTimeToLocalIsoString(
+        utcDate,
+        utcTime,
+        'Pacific/Tahiti',
+      );
+      expect(localIsoString).toBe('2023-02-02T15:00:00.000-10:00');
+    });
+    it('should return undefined if date is invalid', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      const utcDate = '2023-06-32';
+      const utcTime = '07:00';
+      const parisTime = timeConverter.utcStringDateTimeToLocalIsoString(
+        utcDate,
+        utcTime,
+        'Europe/Paris',
+      );
+      expect(parisTime).toBeUndefined();
+    });
+    it('should return undefined if date is undefined', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      const utcDate = undefined;
+      const utcTime = '07:00';
+      const parisTime = timeConverter.utcStringDateTimeToLocalIsoString(
+        utcDate,
+        utcTime,
+        'Europe/Paris',
+      );
+      expect(parisTime).toBeUndefined();
+    });
+    it('should return undefined if time is invalid', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      const utcDate = '2023-06-22';
+      const utcTime = '27:00';
+      const parisTime = timeConverter.utcStringDateTimeToLocalIsoString(
+        utcDate,
+        utcTime,
+        'Europe/Paris',
+      );
+      expect(parisTime).toBeUndefined();
+    });
+    it('should return undefined if time is undefined', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      const utcDate = '2023-06-22';
+      const utcTime = undefined;
+      const parisTime = timeConverter.utcStringDateTimeToLocalIsoString(
+        utcDate,
+        utcTime,
+        'Europe/Paris',
+      );
+      expect(parisTime).toBeUndefined();
+    });
+    it('should return undefined if timezone is invalid', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      const utcDate = '2023-06-22';
+      const utcTime = '07:00';
+      const parisTime = timeConverter.utcStringDateTimeToLocalIsoString(
+        utcDate,
+        utcTime,
+        'Foo/Bar',
+      );
+      expect(parisTime).toBeUndefined();
+    });
+    it('should return undefined if timezone is undefined', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      const utcDate = '2023-06-22';
+      const utcTime = '07:00';
+      const parisTime = timeConverter.utcStringDateTimeToLocalIsoString(
+        utcDate,
+        utcTime,
+        undefined,
+      );
+      expect(parisTime).toBeUndefined();
+    });
+  });
+
+  describe('utcUnixEpochDayFromTime', () => {
     it('should get the utc day of paris at 12:00', () => {
       const timeConverter: TimeConverter = new TimeConverter();
       expect(
@@ -201,4 +396,49 @@ describe('Time Converter', () => {
       ).toBeUndefined();
     });
   });
+
+  describe('localUnixEpochDayFromTime', () => {
+    it('should get the day of paris at 12:00 utc', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      expect(
+        timeConverter.localUnixEpochDayFromTime('12:00', 'Europe/Paris'),
+      ).toBe(4);
+    });
+    it('should get the day of paris at 23:00 utc', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      expect(
+        timeConverter.localUnixEpochDayFromTime('23:00', 'Europe/Paris'),
+      ).toBe(5);
+    });
+    it('should get the day of papeete at 05:00 utc', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      expect(
+        timeConverter.localUnixEpochDayFromTime('05:00', 'Pacific/Tahiti'),
+      ).toBe(3);
+    });
+    it('should return undefined if time is invalid', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      expect(
+        timeConverter.localUnixEpochDayFromTime('28:00', 'Europe/Paris'),
+      ).toBeUndefined();
+    });
+    it('should return undefined if time is undefined', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      expect(
+        timeConverter.localUnixEpochDayFromTime(undefined, 'Europe/Paris'),
+      ).toBeUndefined();
+    });
+    it('should return undefined if timezone is invalid', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      expect(
+        timeConverter.localUnixEpochDayFromTime('12:00', 'Foo/Bar'),
+      ).toBeUndefined();
+    });
+    it('should return undefined if timezone is undefined', () => {
+      const timeConverter: TimeConverter = new TimeConverter();
+      expect(
+        timeConverter.localUnixEpochDayFromTime('12:00', undefined),
+      ).toBeUndefined();
+    });
+  });
 });
diff --git a/src/modules/ad/tests/unit/interface/int-to-frequency.spec.ts b/src/modules/ad/tests/unit/interface/int-to-frequency.spec.ts
deleted file mode 100644
index 1f4a0d7..0000000
--- a/src/modules/ad/tests/unit/interface/int-to-frequency.spec.ts
+++ /dev/null
@@ -1,15 +0,0 @@
-import { Frequency } from '@modules/ad/core/domain/ad.types';
-import { intToFrequency } from '@modules/ad/interface/grpc-controllers/dtos/transformers/int-to-frequency';
-
-describe('frequency mapping', () => {
-  it('should return punctual if frequency is 1', () => {
-    expect(intToFrequency(1)).toBe(Frequency.PUNCTUAL);
-  });
-  it('should return recurrent if frequency is 2', () => {
-    expect(intToFrequency(2)).toBe(Frequency.RECURRENT);
-  });
-  it('should throw an error if frequency is unknown', () => {
-    expect(() => intToFrequency(0)).toThrow();
-    expect(() => intToFrequency(3)).toThrow();
-  });
-});
diff --git a/src/modules/ad/tests/unit/interface/to-precision.spec.ts b/src/modules/ad/tests/unit/interface/to-precision.spec.ts
deleted file mode 100644
index 2da0933..0000000
--- a/src/modules/ad/tests/unit/interface/to-precision.spec.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-import { toPrecision } from '@modules/ad/interface/grpc-controllers/dtos/transformers/to-precision';
-
-describe('precision handler', () => {
-  it('should return a 6 digits float number for a 10 digits float input number and 6 as precision', () => {
-    const precised = toPrecision(1.1234567891, 6);
-    const stringPrecised = precised.toString().split('.')[1];
-    expect(stringPrecised.length).toBe(6);
-  });
-  it('should return a 2 digits float number for a 2 digits float input number and 4 as precision', () => {
-    const precised = toPrecision(1.12, 4);
-    const stringPrecised = precised.toString().split('.')[1];
-    expect(stringPrecised.length).toBe(2);
-  });
-});