@mauron85: This question is off-topic on SO. If you have problems with writing your app to deal with the dst, show us your code, tell us about the specific issue, and we might be able to help you with that. What you seem to ask here is "
How to display this date in a calendar app?" which is an UX issue (and might be on topic at
User Experience), and "
How to deal with DST in general?" which sounds too generic even for
Programmers. —
Bergi 53 secs ago