dosubot[bot]
commented
5 months ago The issue you're encountering with the ICS feed app on Cal.com, where events from different time zones are incorrectly displayed at the same time, seems to stem from how the app processes time zones. This can lead to events like those set for 10am in Helsinki and London being shown simultaneously, potentially causing double bookings.
To address this, the app's time zone handling needs enhancement. This involves ensuring accurate time zone interpretation for events, improving the handling of VTIMEZONE components in ICS feeds, and updating the app to correctly work with time zone data. Additionally, testing with ICS feeds from various sources and time zones will be crucial for identifying and fixing the underlying issues.
There have been similar issues reported and resolved in the past, which suggests that the development team is aware of the complexities involved with time zone handling in calendar events. For a more immediate resolution, reviewing the app's current approach to time zone management and ensuring all dependencies are up-to-date could provide some relief.
If the problem persists, providing more detailed information about the steps you're taking and any specific error messages could help in diagnosing and resolving the issue more effectively.
Sources
- [CAL-2979] ICS feed support for checking against double bookings
- [CAL-2849] Calendar Event ICS doesn't sync for timezones
- [CAL-1226] event scheduled at wrong time(zone)
- packages/app-store/ics-feedcalendar/lib/CalendarService.ts
- packages/app-store/basecamp3/lib/CalendarService.ts
carsonwlee
Issue Summary
On Cal.com, the ICS feed app for importing events for the purposes of checking conflicts fails to correctly recognize imported events' time zones. As a result, users can make bookings at times that are actually busy.
Steps to Reproduce
Actual Results
In Cal.com, navigated to Event types / Preview / Need help? to bring up the Troubleshoot view. Observed that the 10am Helsinki time event and the 10am London time event were displayed on top of each other, at 10am system local time.
Expected Results
The 10am Helsinki time event should show up in the Troubleshoot view at 10am Helsinki time and the 10am London time event should show up at 10am London time, ie. two hours apart. It should not be possible to book appointments on Cal.com at either of these times.
Technical details
Tested on Safari 16.6.
Evidence
Compare the two events scheduled two hours apart on Tuesday 30th morning between an Outlook calendar (original event source), MacOS Calendar (Outlook calendar events added via both an Office365 subscription and an ICS feed subscription; the events show up correctly at two hours apart), and the Cal.com Troubleshoot view (Outlook calendar events added via ICS feed subscription; events show up incorrectly at the same time).