0005896: Imported Web-Calendars shows show shifted times after daylight saving time change - SOGo

ID	Project	Category	View Status	Date Submitted	Last Update

0005896	SOGo	Web Calendar	public	2023-10-30 22:40	2023-10-30 22:40

Reporter	bahnkonzept	Assigned To
Priority	normal	Severity	major	Reproducibility	always
Status	new	Resolution	open
Product Version	5.9.0

Summary	0005896: Imported Web-Calendars shows show shifted times after daylight saving time change
Description	When importing calendars from another instance (in our case: also SoGo 5.9.0), appointments are displayed shifted by one hour after a change of daylight saving time. In this specific case, this concerns appointments that were created before the change of daylight saving time. Please find attached some pictures for appointments before (correct display) and after (incorrect display) change daylight saving time.
Steps To Reproduce	Important: For tracking, the date must be after a change of daylight saving time (next change seen from the end of October 2023: Sunday, 31 March 2024. 1) User A releases calendar from Sogo instance 1 authenticated via WebDAV ICS URL 2) User B takes over this calendar in Sogo instance 2 from the WebDAV ICS URL after user A has authenticated himself. 3) User A creates an appointment in his calendar for 8 a.m. 4) User B updates his calendar 5) Appointment appears (with change from summer to winter time) at 7 a.m.
Tags	No tags attached.

Date Modified	Username	Field
2023-10-30 22:40	bahnkonzept	New Issue
2023-10-30 22:40	bahnkonzept	File Added: ScreenshotCalendarOriginalBeforeDSTchange.png
2023-10-30 22:40	bahnkonzept	File Added: ScreenshotCalendarImportedBeforeDSTchange.png
2023-10-30 22:40	bahnkonzept	File Added: ScreenshotCalendarOriginalAfterDSTchange.png
2023-10-30 22:40	bahnkonzept	File Added: ScreenshotCalendarImportedAfterDSTchange.png

bahnkonzept 2023-10-30 22:40 reporter	ScreenshotCalendarOriginalBeforeDSTchange.png (31,952 bytes) ScreenshotCalendarOriginalBeforeDSTchange.png (31,952 bytes) ScreenshotCalendarImportedBeforeDSTchange.png (30,941 bytes) ScreenshotCalendarImportedBeforeDSTchange.png (30,941 bytes) ScreenshotCalendarOriginalAfterDSTchange.png (30,977 bytes) ScreenshotCalendarOriginalAfterDSTchange.png (30,977 bytes) ScreenshotCalendarImportedAfterDSTchange.png (30,946 bytes) ScreenshotCalendarImportedAfterDSTchange.png (30,946 bytes)