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fix(dates): use UTC parsing and display for date-only strings (#351)

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Date-only strings parsed with new Date(dateStr + 'T00:00:00') were
interpreted relative to the local timezone, causing off-by-one day
display for users west of UTC. Fixed across 16 files by parsing as
UTC ('T00:00:00Z') and displaying with timeZone: 'UTC'.
This commit is contained in:
Maurice
2026-04-03 21:18:56 +02:00
parent ba14636c1d
commit 897e1bff26
16 changed files with 43 additions and 43 deletions
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client/src/components/Planner/DayDetailPanel.tsx
+4 -4
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@@ -154,9 +154,9 @@ export default function DayDetailPanel({ day, days, places, categories = [], tri
if (!day) return null
const formattedDate = day.date ? new Date(day.date + 'T00:00:00').toLocaleDateString(
const formattedDate = day.date ? new Date(day.date + 'T00:00:00Z').toLocaleDateString(
getLocaleForLanguage(language),
{ weekday: 'long', day: 'numeric', month: 'long' }
{ weekday: 'long', day: 'numeric', month: 'long', timeZone: 'UTC' }
) : null
const placesWithCoords = places.filter(p => p.lat && p.lng)
@@ -445,7 +445,7 @@ export default function DayDetailPanel({ day, days, places, categories = [], tri
onChange={v => setHotelDayRange(prev => ({ start: v, end: Math.max(v, prev.end) }))}
options={days.map((d, i) => ({
value: d.id,
label: `${d.title || t('planner.dayN', { n: i + 1 })}${d.date ? ` — ${new Date(d.date + 'T00:00:00').toLocaleDateString(locale, { day: 'numeric', month: 'short' })}` : ''}`,
label: `${d.title || t('planner.dayN', { n: i + 1 })}${d.date ? ` — ${new Date(d.date + 'T00:00:00Z').toLocaleDateString(locale, { day: 'numeric', month: 'short', timeZone: 'UTC' })}` : ''}`,
}))}
size="sm"
/>
@@ -457,7 +457,7 @@ export default function DayDetailPanel({ day, days, places, categories = [], tri
onChange={v => setHotelDayRange(prev => ({ start: Math.min(prev.start, v), end: v }))}
options={days.map((d, i) => ({
value: d.id,
label: `${d.title || t('planner.dayN', { n: i + 1 })}${d.date ? ` — ${new Date(d.date + 'T00:00:00').toLocaleDateString(locale, { day: 'numeric', month: 'short' })}` : ''}`,
label: `${d.title || t('planner.dayN', { n: i + 1 })}${d.date ? ` — ${new Date(d.date + 'T00:00:00Z').toLocaleDateString(locale, { day: 'numeric', month: 'short', timeZone: 'UTC' })}` : ''}`,
}))}
size="sm"
/>