Problem Statement

Repeating events showing 1 hour difference before and after the DST change when Google/Yahoo calendar subscribes Team Calendar.

Steps to replicate

1. Set your Confluence timezone to (GMT+0100) Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna
2. Create a calendar in Team Calendar with the timezone (Europe/Vienna +0100)
3. Go to October 2015, create a daily repeating event with time before 25th of October and ends at 31st of October.
4. Note that Team Calendar shows all the repeating events at the same time.
5. Right click the calendar and click subscribe and copy the link.
6. Go to your Google/Yahoo calendar and set your timezone to Vienna (GMT+1). Under the "other calendar" add the URL and wait for it to load.
7. You will find that the events before 25th October displays the time correctly. Events after 25th will show 1 hour earlier.

Important things to note

1. DST for Vienna ends at 25th October
2. This only happens for repeating events