diff --git a/apps/api/src/app/core/portfolio-calculator.spec.ts b/apps/api/src/app/core/portfolio-calculator.spec.ts
index 9de8ff26..f4d5173d 100644
--- a/apps/api/src/app/core/portfolio-calculator.spec.ts
+++ b/apps/api/src/app/core/portfolio-calculator.spec.ts
@@ -7,7 +7,7 @@ import { TimelineSpecification } from '@ghostfolio/api/app/core/interfaces/timel
 import { TransactionPoint } from '@ghostfolio/api/app/core/interfaces/transaction-point.interface';
 import { PortfolioCalculator } from '@ghostfolio/api/app/core/portfolio-calculator';
 import { OrderType } from '@ghostfolio/api/models/order-type';
-import { resetHours } from '@ghostfolio/common/helper';
+import { DATE_FORMAT, resetHours } from '@ghostfolio/common/helper';
 import { Currency } from '@prisma/client';
 import Big from 'big.js';
 import {
@@ -25,7 +25,7 @@ function mockGetValue(symbol: string, date: Date) {
     if (isSameDay(today, date)) {
       return { marketPrice: 213.32 };
     } else {
-      const startDate = parse('2019-02-01', 'yyyy-MM-dd', new Date());
+      const startDate = parse('2019-02-01', DATE_FORMAT, new Date());
       const daysInBetween = differenceInCalendarDays(date, startDate);
 
       const marketPrice = new Big('144.38').plus(
@@ -36,10 +36,10 @@ function mockGetValue(symbol: string, date: Date) {
   } else if (symbol === 'AMZN') {
     return { marketPrice: 2021.99 };
   } else if (symbol === 'TSLA') {
-    if (isSameDay(parse('2021-07-26', 'yyyy-MM-dd', new Date()), date)) {
+    if (isSameDay(parse('2021-07-26', DATE_FORMAT, new Date()), date)) {
       return { marketPrice: 657.62 };
     }
-    if (isSameDay(parse('2021-01-02', 'yyyy-MM-dd', new Date()), date)) {
+    if (isSameDay(parse('2021-01-02', DATE_FORMAT, new Date()), date)) {
       return { marketPrice: 666.66 };
     }
     return { marketPrice: 0 };
@@ -607,7 +607,7 @@ describe('PortfolioCalculator', () => {
         .spyOn(Date, 'now')
         .mockImplementation(() => new Date(Date.UTC(2021, 6, 26)).getTime()); // 2021-07-26
       const currentPositions = await portfolioCalculator.getCurrentPositions(
-        parse('2020-01-21', 'yyyy-MM-dd', new Date())
+        parse('2020-01-21', DATE_FORMAT, new Date())
       );
       spy.mockRestore();
 
@@ -642,7 +642,7 @@ describe('PortfolioCalculator', () => {
         .spyOn(Date, 'now')
         .mockImplementation(() => new Date(Date.UTC(2021, 6, 26)).getTime()); // 2021-07-26
       const currentPositions = await portfolioCalculator.getCurrentPositions(
-        parse('2021-01-01', 'yyyy-MM-dd', new Date())
+        parse('2021-01-01', DATE_FORMAT, new Date())
       );
       spy.mockRestore();
 
@@ -677,7 +677,7 @@ describe('PortfolioCalculator', () => {
         .spyOn(Date, 'now')
         .mockImplementation(() => new Date(Date.UTC(2021, 6, 26)).getTime()); // 2021-07-26
       const currentPositions = await portfolioCalculator.getCurrentPositions(
-        parse('2021-01-02', 'yyyy-MM-dd', new Date())
+        parse('2021-01-02', DATE_FORMAT, new Date())
       );
       spy.mockRestore();
 
@@ -712,7 +712,7 @@ describe('PortfolioCalculator', () => {
         .spyOn(Date, 'now')
         .mockImplementation(() => new Date(Date.UTC(2020, 9, 24)).getTime()); // 2020-10-24
       const currentPositions = await portfolioCalculator.getCurrentPositions(
-        parse('2019-01-01', 'yyyy-MM-dd', new Date())
+        parse('2019-01-01', DATE_FORMAT, new Date())
       );
       spy.mockRestore();
 
@@ -788,7 +788,7 @@ describe('PortfolioCalculator', () => {
       // gross performance percentage: 1.100526008 * 1.034838024 = 1.138866159 => 13.89 %
 
       const currentPositions = await portfolioCalculator.getCurrentPositions(
-        parse('2020-01-01', 'yyyy-MM-dd', new Date())
+        parse('2020-01-01', DATE_FORMAT, new Date())
       );
 
       spy.mockRestore();
diff --git a/apps/api/src/app/experimental/experimental.controller.ts b/apps/api/src/app/experimental/experimental.controller.ts
index f8535ac5..0736a001 100644
--- a/apps/api/src/app/experimental/experimental.controller.ts
+++ b/apps/api/src/app/experimental/experimental.controller.ts
@@ -1,4 +1,5 @@
 import { baseCurrency, benchmarks } from '@ghostfolio/common/config';
+import { DATE_FORMAT } from '@ghostfolio/common/helper';
 import { isApiTokenAuthorized } from '@ghostfolio/common/permissions';
 import { RequestWithUser } from '@ghostfolio/common/types';
 import {
@@ -82,7 +83,7 @@ export class ExperimentalController {
     let date = new Date();
 
     if (dateString) {
-      date = parse(dateString, 'yyyy-MM-dd', new Date());
+      date = parse(dateString, DATE_FORMAT, new Date());
     }
 
     return this.experimentalService.getValue(orders, date, baseCurrency);
diff --git a/apps/api/src/app/portfolio/portfolio.service.ts b/apps/api/src/app/portfolio/portfolio.service.ts
index 7a861780..885ce675 100644
--- a/apps/api/src/app/portfolio/portfolio.service.ts
+++ b/apps/api/src/app/portfolio/portfolio.service.ts
@@ -14,7 +14,7 @@ import { ImpersonationService } from '@ghostfolio/api/services/impersonation.ser
 import { IOrder } from '@ghostfolio/api/services/interfaces/interfaces';
 import { Type } from '@ghostfolio/api/services/interfaces/interfaces';
 import { RulesService } from '@ghostfolio/api/services/rules.service';
-import { parseDate } from '@ghostfolio/common/helper';
+import { DATE_FORMAT, parseDate } from '@ghostfolio/common/helper';
 import {
   PortfolioItem,
   PortfolioOverview,
@@ -57,6 +57,7 @@ import {
 export class PortfolioService {
   public constructor(
     private readonly accountService: AccountService,
+    private readonly currentRateService: CurrentRateService,
     private readonly dataProviderService: DataProviderService,
     private readonly exchangeRateDataService: ExchangeRateDataService,
     private readonly impersonationService: ImpersonationService,
@@ -64,8 +65,7 @@ export class PortfolioService {
     private readonly redisCacheService: RedisCacheService,
     @Inject(REQUEST) private readonly request: RequestWithUser,
     private readonly rulesService: RulesService,
-    private readonly userService: UserService,
-    private readonly currentRateService: CurrentRateService
+    private readonly userService: UserService
   ) {}
 
   public async createPortfolio(aUserId: string): Promise<Portfolio> {
@@ -163,32 +163,31 @@ export class PortfolioService {
     if (transactionPoints.length === 0) {
       return [];
     }
-    const dateFormat = 'yyyy-MM-dd';
     let portfolioStart = parse(
       transactionPoints[0].date,
-      dateFormat,
+      DATE_FORMAT,
       new Date()
     );
     portfolioStart = this.getStartDate(aDateRange, portfolioStart);
 
     const timelineSpecification: TimelineSpecification[] = [
       {
-        start: format(portfolioStart, dateFormat),
+        start: format(portfolioStart, DATE_FORMAT),
         accuracy: 'day'
       }
     ];
 
     const timeline = await portfolioCalculator.calculateTimeline(
       timelineSpecification,
-      format(new Date(), dateFormat)
+      format(new Date(), DATE_FORMAT)
     );
 
     return timeline
       .filter((timelineItem) => timelineItem !== null)
       .map((timelineItem) => ({
         date: timelineItem.date,
-        value: timelineItem.grossPerformance.toNumber(),
-        marketPrice: timelineItem.value
+        marketPrice: timelineItem.value,
+        value: timelineItem.grossPerformance.toNumber()
       }));
   }
 
@@ -270,7 +269,7 @@ export class PortfolioService {
         for (const [date, { marketPrice }] of Object.entries(
           historicalData[aSymbol]
         )) {
-          const currentDate = parse(date, 'yyyy-MM-dd', new Date());
+          const currentDate = parse(date, DATE_FORMAT, new Date());
           if (
             isSameDay(currentDate, parseISO(orders[0]?.getDate())) ||
             isAfter(currentDate, parseISO(orders[0]?.getDate()))
@@ -533,7 +532,7 @@ export class PortfolioService {
 
     const portfolioOrders: PortfolioOrder[] = orders.map((order) => ({
       currency: order.currency,
-      date: format(order.date, 'yyyy-MM-dd'),
+      date: format(order.date, DATE_FORMAT),
       name: order.SymbolProfile?.name,
       quantity: new Big(order.quantity),
       symbol: order.symbol,
diff --git a/apps/api/src/models/portfolio.spec.ts b/apps/api/src/models/portfolio.spec.ts
index ebd888c4..053ef4f8 100644
--- a/apps/api/src/models/portfolio.spec.ts
+++ b/apps/api/src/models/portfolio.spec.ts
@@ -1,6 +1,6 @@
 import { AccountService } from '@ghostfolio/api/app/account/account.service';
 import { UNKNOWN_KEY, baseCurrency } from '@ghostfolio/common/config';
-import { getUtc, getYesterday } from '@ghostfolio/common/helper';
+import { DATE_FORMAT, getUtc, getYesterday } from '@ghostfolio/common/helper';
 import {
   AccountType,
   Currency,
@@ -30,8 +30,8 @@ jest.mock('../app/account/account.service', () => {
 jest.mock('../services/data-provider.service', () => {
   return {
     DataProviderService: jest.fn().mockImplementation(() => {
-      const today = format(new Date(), 'yyyy-MM-dd');
-      const yesterday = format(getYesterday(), 'yyyy-MM-dd');
+      const today = format(new Date(), DATE_FORMAT);
+      const yesterday = format(getYesterday(), DATE_FORMAT);
 
       return {
         get: () => {
diff --git a/apps/api/src/models/portfolio.ts b/apps/api/src/models/portfolio.ts
index b961333b..1ea84182 100644
--- a/apps/api/src/models/portfolio.ts
+++ b/apps/api/src/models/portfolio.ts
@@ -1,7 +1,12 @@
 import { AccountService } from '@ghostfolio/api/app/account/account.service';
 import { CashDetails } from '@ghostfolio/api/app/account/interfaces/cash-details.interface';
 import { UNKNOWN_KEY, ghostfolioCashSymbol } from '@ghostfolio/common/config';
-import { getToday, getYesterday, resetHours } from '@ghostfolio/common/helper';
+import {
+  DATE_FORMAT,
+  getToday,
+  getYesterday,
+  resetHours
+} from '@ghostfolio/common/helper';
 import {
   PortfolioItem,
   PortfolioPerformance,
@@ -731,7 +736,7 @@ export class Portfolio implements PortfolioInterface {
           investment: 0,
           investmentInOriginalCurrency: 0,
           marketPrice:
-            historicalData[symbol]?.[format(currentDate, 'yyyy-MM-dd')]
+            historicalData[symbol]?.[format(currentDate, DATE_FORMAT)]
               ?.marketPrice || 0,
           quantity: 0,
           transactionCount: 0
@@ -774,7 +779,7 @@ export class Portfolio implements PortfolioInterface {
           investment: 0,
           investmentInOriginalCurrency: 0,
           marketPrice:
-            historicalData[symbol]?.[format(yesterday, 'yyyy-MM-dd')]
+            historicalData[symbol]?.[format(yesterday, DATE_FORMAT)]
               ?.marketPrice || 0,
           name: '',
           quantity: 0,
diff --git a/apps/api/src/services/data-gathering.service.ts b/apps/api/src/services/data-gathering.service.ts
index 2fbc4655..e726ba0a 100644
--- a/apps/api/src/services/data-gathering.service.ts
+++ b/apps/api/src/services/data-gathering.service.ts
@@ -1,5 +1,6 @@
 import { benchmarks, currencyPairs } from '@ghostfolio/common/config';
 import {
+  DATE_FORMAT,
   getUtc,
   isGhostfolioScraperApiSymbol,
   isRakutenRapidApiSymbol,
@@ -193,11 +194,11 @@ export class DataGatheringService {
           )
         ) {
           if (
-            historicalData[symbol]?.[format(currentDate, 'yyyy-MM-dd')]
+            historicalData[symbol]?.[format(currentDate, DATE_FORMAT)]
               ?.marketPrice
           ) {
             lastMarketPrice =
-              historicalData[symbol]?.[format(currentDate, 'yyyy-MM-dd')]
+              historicalData[symbol]?.[format(currentDate, DATE_FORMAT)]
                 ?.marketPrice;
           }
 
diff --git a/apps/api/src/services/data-provider.service.ts b/apps/api/src/services/data-provider.service.ts
index e920399e..98fbc6ee 100644
--- a/apps/api/src/services/data-provider.service.ts
+++ b/apps/api/src/services/data-provider.service.ts
@@ -1,4 +1,5 @@
 import {
+  DATE_FORMAT,
   isGhostfolioScraperApiSymbol,
   isRakutenRapidApiSymbol
 } from '@ghostfolio/common/helper';
@@ -100,9 +101,9 @@ export class DataProviderService {
 
     const rangeQuery =
       from && to
-        ? `AND date >= '${format(from, 'yyyy-MM-dd')}' AND date <= '${format(
+        ? `AND date >= '${format(from, DATE_FORMAT)}' AND date <= '${format(
             to,
-            'yyyy-MM-dd'
+            DATE_FORMAT
           )}'`
         : '';
 
@@ -120,7 +121,7 @@ export class DataProviderService {
 
         r[symbol] = {
           ...(r[symbol] || {}),
-          [format(new Date(date), 'yyyy-MM-dd')]: { marketPrice }
+          [format(new Date(date), DATE_FORMAT)]: { marketPrice }
         };
 
         return r;
diff --git a/apps/api/src/services/data-provider/alpha-vantage/alpha-vantage.service.ts b/apps/api/src/services/data-provider/alpha-vantage/alpha-vantage.service.ts
index 7632c418..9bfc861a 100644
--- a/apps/api/src/services/data-provider/alpha-vantage/alpha-vantage.service.ts
+++ b/apps/api/src/services/data-provider/alpha-vantage/alpha-vantage.service.ts
@@ -1,4 +1,5 @@
 import { LookupItem } from '@ghostfolio/api/app/symbol/interfaces/lookup-item.interface';
+import { DATE_FORMAT } from '@ghostfolio/common/helper';
 import { Granularity } from '@ghostfolio/common/types';
 import { Injectable } from '@nestjs/common';
 import { DataSource } from '@prisma/client';
@@ -66,8 +67,8 @@ export class AlphaVantageService implements DataProviderInterface {
         historicalData['Time Series (Digital Currency Daily)']
       ).sort()) {
         if (
-          isAfter(from, parse(key, 'yyyy-MM-dd', new Date())) &&
-          isBefore(to, parse(key, 'yyyy-MM-dd', new Date()))
+          isAfter(from, parse(key, DATE_FORMAT, new Date())) &&
+          isBefore(to, parse(key, DATE_FORMAT, new Date()))
         ) {
           response[symbol][key] = {
             marketPrice: parseFloat(timeSeries['4a. close (USD)'])
diff --git a/apps/api/src/services/data-provider/ghostfolio-scraper-api/ghostfolio-scraper-api.service.ts b/apps/api/src/services/data-provider/ghostfolio-scraper-api/ghostfolio-scraper-api.service.ts
index 8b8e4290..32544806 100644
--- a/apps/api/src/services/data-provider/ghostfolio-scraper-api/ghostfolio-scraper-api.service.ts
+++ b/apps/api/src/services/data-provider/ghostfolio-scraper-api/ghostfolio-scraper-api.service.ts
@@ -1,4 +1,5 @@
 import {
+  DATE_FORMAT,
   getYesterday,
   isGhostfolioScraperApiSymbol
 } from '@ghostfolio/common/helper';
@@ -95,7 +96,7 @@ export class GhostfolioScraperApiService implements DataProviderInterface {
 
       return {
         [symbol]: {
-          [format(getYesterday(), 'yyyy-MM-dd')]: {
+          [format(getYesterday(), DATE_FORMAT)]: {
             marketPrice: value
           }
         }
@@ -109,14 +110,13 @@ export class GhostfolioScraperApiService implements DataProviderInterface {
 
   public async getScraperConfigurations(): Promise<ScraperConfig[]> {
     try {
-      const {
-        value: scraperConfigString
-      } = await this.prisma.property.findFirst({
-        select: {
-          value: true
-        },
-        where: { key: 'SCRAPER_CONFIG' }
-      });
+      const { value: scraperConfigString } =
+        await this.prisma.property.findFirst({
+          select: {
+            value: true
+          },
+          where: { key: 'SCRAPER_CONFIG' }
+        });
 
       return JSON.parse(scraperConfigString);
     } catch {}
diff --git a/apps/api/src/services/data-provider/rakuten-rapid-api/rakuten-rapid-api.service.ts b/apps/api/src/services/data-provider/rakuten-rapid-api/rakuten-rapid-api.service.ts
index 5b5682bd..6b8fa7c8 100644
--- a/apps/api/src/services/data-provider/rakuten-rapid-api/rakuten-rapid-api.service.ts
+++ b/apps/api/src/services/data-provider/rakuten-rapid-api/rakuten-rapid-api.service.ts
@@ -1,4 +1,5 @@
 import {
+  DATE_FORMAT,
   getToday,
   getYesterday,
   isRakutenRapidApiSymbol
@@ -117,7 +118,7 @@ export class RakutenRapidApiService implements DataProviderInterface {
 
         return {
           'GF.FEAR_AND_GREED_INDEX': {
-            [format(getYesterday(), 'yyyy-MM-dd')]: {
+            [format(getYesterday(), DATE_FORMAT)]: {
               marketPrice: fgi.previousClose.value
             }
           }
diff --git a/apps/api/src/services/data-provider/yahoo-finance/yahoo-finance.service.ts b/apps/api/src/services/data-provider/yahoo-finance/yahoo-finance.service.ts
index 250909aa..c9ef1f69 100644
--- a/apps/api/src/services/data-provider/yahoo-finance/yahoo-finance.service.ts
+++ b/apps/api/src/services/data-provider/yahoo-finance/yahoo-finance.service.ts
@@ -1,6 +1,11 @@
 import { LookupItem } from '@ghostfolio/api/app/symbol/interfaces/lookup-item.interface';
 import { UNKNOWN_KEY } from '@ghostfolio/common/config';
-import { isCrypto, isCurrency, parseCurrency } from '@ghostfolio/common/helper';
+import {
+  DATE_FORMAT,
+  isCrypto,
+  isCurrency,
+  parseCurrency
+} from '@ghostfolio/common/helper';
 import { Granularity } from '@ghostfolio/common/types';
 import { Injectable } from '@nestjs/common';
 import { DataSource } from '@prisma/client';
@@ -103,8 +108,8 @@ export class YahooFinanceService implements DataProviderInterface {
         [symbol: string]: IYahooFinanceHistoricalResponse[];
       } = await yahooFinance.historical({
         symbols: yahooSymbols,
-        from: format(from, 'yyyy-MM-dd'),
-        to: format(to, 'yyyy-MM-dd')
+        from: format(from, DATE_FORMAT),
+        to: format(to, DATE_FORMAT)
       });
 
       const response: {
@@ -117,7 +122,7 @@ export class YahooFinanceService implements DataProviderInterface {
         response[symbol] = {};
 
         timeSeries.forEach((timeSerie) => {
-          response[symbol][format(timeSerie.date, 'yyyy-MM-dd')] = {
+          response[symbol][format(timeSerie.date, DATE_FORMAT)] = {
             marketPrice: timeSerie.close,
             performance: timeSerie.open - timeSerie.close
           };
diff --git a/apps/api/src/services/exchange-rate-data.service.ts b/apps/api/src/services/exchange-rate-data.service.ts
index 29ea3786..0d5f6787 100644
--- a/apps/api/src/services/exchange-rate-data.service.ts
+++ b/apps/api/src/services/exchange-rate-data.service.ts
@@ -1,4 +1,4 @@
-import { getYesterday } from '@ghostfolio/common/helper';
+import { DATE_FORMAT, getYesterday } from '@ghostfolio/common/helper';
 import { Injectable } from '@nestjs/common';
 import { Currency } from '@prisma/client';
 import { format } from 'date-fns';
@@ -51,7 +51,7 @@ export class ExchangeRateDataService {
 
     this.pairs.forEach((pair) => {
       const [currency1, currency2] = pair.match(/.{1,3}/g);
-      const date = format(getYesterday(), 'yyyy-MM-dd');
+      const date = format(getYesterday(), DATE_FORMAT);
 
       this.currencies[pair] = resultExtended[pair]?.[date]?.marketPrice;
 
diff --git a/apps/client/src/app/components/performance-chart-dialog/performance-chart-dialog.component.ts b/apps/client/src/app/components/performance-chart-dialog/performance-chart-dialog.component.ts
index f8adcec1..5dffaae6 100644
--- a/apps/client/src/app/components/performance-chart-dialog/performance-chart-dialog.component.ts
+++ b/apps/client/src/app/components/performance-chart-dialog/performance-chart-dialog.component.ts
@@ -6,6 +6,7 @@ import {
 } from '@angular/core';
 import { MAT_DIALOG_DATA, MatDialogRef } from '@angular/material/dialog';
 import { DataService } from '@ghostfolio/client/services/data.service';
+import { DATE_FORMAT } from '@ghostfolio/common/helper';
 import { isToday, parse } from 'date-fns';
 import { Subject } from 'rxjs';
 import { takeUntil } from 'rxjs/operators';
@@ -66,7 +67,7 @@ export class PerformanceChartDialog {
               value: benchmarkItem.value * coefficient
             });
           } else if (
-            isToday(parse(historicalDataItem.date, 'yyyy-MM-dd', new Date()))
+            isToday(parse(historicalDataItem.date, DATE_FORMAT, new Date()))
           ) {
             this.benchmarkDataItems.push({
               date: historicalDataItem.date,
diff --git a/apps/client/src/app/components/position/position-detail-dialog/position-detail-dialog.component.ts b/apps/client/src/app/components/position/position-detail-dialog/position-detail-dialog.component.ts
index e8ffbfad..947a9f21 100644
--- a/apps/client/src/app/components/position/position-detail-dialog/position-detail-dialog.component.ts
+++ b/apps/client/src/app/components/position/position-detail-dialog/position-detail-dialog.component.ts
@@ -7,6 +7,7 @@ import {
 } from '@angular/core';
 import { MAT_DIALOG_DATA, MatDialogRef } from '@angular/material/dialog';
 import { DataService } from '@ghostfolio/client/services/data.service';
+import { DATE_FORMAT } from '@ghostfolio/common/helper';
 import { format, isSameMonth, isToday, parseISO } from 'date-fns';
 import { Subject } from 'rxjs';
 import { takeUntil } from 'rxjs/operators';
@@ -115,13 +116,13 @@ export class PositionDetailDialog implements OnDestroy {
           } else {
             // Add market price
             this.historicalDataItems.push({
-              date: format(new Date(), 'yyyy-MM-dd'),
+              date: format(new Date(), DATE_FORMAT),
               value: this.marketPrice
             });
 
             // Add benchmark
             this.benchmarkDataItems.push({
-              date: format(new Date(), 'yyyy-MM-dd'),
+              date: format(new Date(), DATE_FORMAT),
               value: averagePrice
             });
           }