Merge 6ad46c3054 into c90bb1dfe5

CHANGELOG.md

@@ -28,6 +28,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Handled an exception in the country weightings parsing of the _Financial Modeling Prep_ service
 
+### Fixed
+
+- Fixed the date handling in the historical market data editor so entries no longer shift to the previous day for users in timezones behind UTC
+
 ## 3.42.0 - 2026-08-04
 
 ### Changed

libs/common/src/lib/helper.spec.ts

@@ -4,6 +4,7 @@ import {
 } from '@ghostfolio/common/config';
 import {
   extractNumberFromString,
+  getLocalDateFromUtcDate,
   getNumberFormatGroup,
   getStringOrNull,
   getStringOrUndefined,
@@ -355,4 +356,36 @@ describe('Helper', () => {
       ).toEqual(true);
     });
   });
+
+  describe('Get local date from UTC date', () => {
+    const originalTz = process.env.TZ;
+
+    afterEach(() => {
+      process.env.TZ = originalTz;
+    });
+
+    it('Preserve the calendar date in a timezone behind UTC', () => {
+      process.env.TZ = 'America/New_York';
+
+      const localDate = getLocalDateFromUtcDate(
+        new Date('2026-01-05T00:00:00.000Z')
+      );
+
+      expect(localDate.getFullYear()).toEqual(2026);
+      expect(localDate.getMonth()).toEqual(0);
+      expect(localDate.getDate()).toEqual(5);
+    });
+
+    it('Preserve the calendar date in a timezone ahead of UTC', () => {
+      process.env.TZ = 'Asia/Tokyo';
+
+      const localDate = getLocalDateFromUtcDate(
+        new Date('2026-01-05T00:00:00.000Z')
+      );
+
+      expect(localDate.getFullYear()).toEqual(2026);
+      expect(localDate.getMonth()).toEqual(0);
+      expect(localDate.getDate()).toEqual(5);
+    });
+  });
 });

libs/common/src/lib/helper.ts

@@ -360,6 +360,14 @@ export function getEmojiFlag(aCountryCode: string) {
     );
 }
 
+export function getLocalDateFromUtcDate(aUtcDate: Date) {
+  return new Date(
+    aUtcDate.getUTCFullYear(),
+    aUtcDate.getUTCMonth(),
+    aUtcDate.getUTCDate()
+  );
+}
+
 export function getLocale() {
   return navigator.language ?? DEFAULT_LOCALE;
 }

libs/ui/src/lib/services/data.service.ts

@@ -16,7 +16,10 @@ import {
   UpdateTagDto,
   UpdateUserSettingDto
 } from '@ghostfolio/common/dtos';
-import { DATE_FORMAT } from '@ghostfolio/common/helper';
+import {
+  DATE_FORMAT,
+  getLocalDateFromUtcDate
+} from '@ghostfolio/common/helper';
 import {
   Access,
   AccessTokenResponse,
@@ -586,7 +589,7 @@ export class DataService {
       .pipe(
         map((data) => {
           for (const item of data.marketData) {
-            item.date = parseISO(item.date);
+            item.date = getLocalDateFromUtcDate(parseISO(item.date));
           }
 
           for (const item of data.splits ?? []) {