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Code Issues Packages Projects Releases 2 Wiki Activity

fix: correct DST offset handling in daily quiet hours (#1827)

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This commit is contained in:
Sven van Ginkel
2026-03-22 17:50:36 +01:00
committed by GitHub
parent ff36138229
commit 441bdd2ec5
1 changed files with 8 additions and 7 deletions
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15
internal/site/src/components/routes/settings/quiet-hours.tsx
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@@ -134,10 +134,10 @@ export function QuietHours() {
const startMinutes = startDate.getUTCHours() * 60 + startDate.getUTCMinutes()
const endMinutes = endDate.getUTCHours() * 60 + endDate.getUTCMinutes()
// Convert UTC to local time offset
const offset = now.getTimezoneOffset()
const localStartMinutes = (startMinutes - offset + 1440) % 1440
const localEndMinutes = (endMinutes - offset + 1440) % 1440
// Convert UTC to local time using the stored date's offset, not the current date's offset
// This avoids DST mismatch when records were saved in a different DST period
const localStartMinutes = (startMinutes - startDate.getTimezoneOffset() + 1440) % 1440
const localEndMinutes = (endMinutes - endDate.getTimezoneOffset() + 1440) % 1440
// Handle cases where window spans midnight
if (localStartMinutes <= localEndMinutes) {
@@ -347,12 +347,13 @@ function QuietHoursDialog({
if (windowType === "daily") {
// For daily windows, convert local time to UTC
// Create a date with the time in local timezone, then convert to UTC
const startDate = new Date(`2000-01-01T${startTime}:00`)
// Use today's date so the current DST offset is applied (not a fixed historical date)
const today = new Date().toISOString().split("T")[0]
const startDate = new Date(`${today}T${startTime}:00`)
startValue = startDate.toISOString()
if (endTime) {
const endDate = new Date(`2000-01-01T${endTime}:00`)
const endDate = new Date(`${today}T${endTime}:00`)
endValue = endDate.toISOString()
}
} else {