3 hours of difference in notification

[IL1]

There is now a workaround from @WyzeJasonJ to fix this issue. See if this works for you.

@IL1

Anyway, for people bothered by it you can try this.
Not sure if all the steps are needed:

1. Manually set your phone’s time zone to another one.
2. Wait 10 minutes.
3. Manually set your phone’s time zone back to your current time zone.
4. Unset the manual time zone override.

On iOS: Settings > General > Date & Time > Set Automatically (uncheck)