I just noticed on my own mobile phone that most of the re-occurring events that I have created (on the phone about a month ago) 3 hours earlier from 1.10. onwards. Same appointment on 28.10. is correct but on 4.11. it's 3 hours early. But, two appointments (both on Monday) are still at their correct time.

All the appointments were created on the phone and re-occur weekly til the end of the year. I can not be 100% sure they have been correct from the beginning.

Phone is running firmware 500.21.009.