From 661b2652515d4bf8dee5b816ed84c28b421b4d67 Mon Sep 17 00:00:00 2001
From: neon <18559658+neonsolstice@users.noreply.github.com>
Date: Sun, 30 Aug 2026 04:27:13 +0000
Subject: [PATCH] fix(metadata): preserve calendar dates across timezones

Keep month-name metadata dates stable in positive UTC offsets so local-to-UTC conversion cannot change the stored calendar day.

Fixes #1194
---
 server/src/common/utils/published-date.utils.test.ts | 1 +
 server/src/common/utils/published-date.utils.ts      | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/server/src/common/utils/published-date.utils.test.ts b/server/src/common/utils/published-date.utils.test.ts
index edc39fab8..bce0a609b 100644
--- a/server/src/common/utils/published-date.utils.test.ts
+++ b/server/src/common/utils/published-date.utils.test.ts
@@ -28,6 +28,7 @@ describe('published-date utils', () => {
     expect(parsePublishedDateKey('1965/8/1')).toBe('1965-08-01');
     expect(parsePublishedDateKey('1965-08-01T12:30:00Z')).toBe('1965-08-01');
     expect(parsePublishedDateKey('August 1, 1965')).toBe('1965-08-01');
+    expect(parsePublishedDateKey('January 1, 2020')).toBe('2020-01-01');
     expect(parsePublishedDateKey('1965')).toBeUndefined();
   });
 
diff --git a/server/src/common/utils/published-date.utils.ts b/server/src/common/utils/published-date.utils.ts
index e45caac04..65869bab3 100644
--- a/server/src/common/utils/published-date.utils.ts
+++ b/server/src/common/utils/published-date.utils.ts
@@ -60,7 +60,8 @@ export function parsePublishedDateKey(value: unknown): string | undefined {
 
   if (MONTH_NAME_RE.test(trimmed) && /\b\d{1,2}\b/.test(trimmed) && /\b\d{4}\b/.test(trimmed)) {
     const parsed = new Date(trimmed);
-    return dateToPublishedDateKey(parsed);
+    if (Number.isNaN(parsed.getTime())) return undefined;
+    return buildDateKey(String(parsed.getFullYear()), String(parsed.getMonth() + 1), String(parsed.getDate()));
   }
 
   return undefined;