Hi! I understand you’re having some trouble with Proton Calendar's time zone after traveling. That can sometimes cause events to show at the wrong times if the calendar doesn’t update to your new time zone. To get a clearer picture:

1. Are you using the Proton Calendar app on your Android device?
2. Did you notice if your device’s system clock or time zone settings were manually changed or stayed on the previous time zone?
3. Are the event times wrong for existing events, new ones, or both?

Once I have this info, I can guide you on the best next steps. Generally, Proton Calendar currently does not support changing time zones directly within the app; it relies on your device's system time zone to display event times correctly. So, ensuring your Android device’s time zone is set correctly after travel is key. Here’s how to check and fix that on Android 10:

1. Open your device’s Settings app.
2. Scroll to System > Date & time.
3. Make sure Automatic date & time and Automatic time zone are enabled so the device adjusts time zone automatically based on your location.
4. If you prefer manual control, turn those off, then tap Select time zone to pick your current time zone manually.

After this, restart the Proton Calendar app or refresh the page if you’re using it in a browser. This should update the calendar event times to your new time zone.

If your device’s time settings are correct and Proton Calendar still shows incorrect times, it may be related to how the app handles time zones on events created before travel. Currently, there's no built-in feature in the app to adjust the time zone of existing events individually.

Let me know your current setup and if these steps help or need further assistance!

Are you satisfied with this solution so far?