Today we have switched to daylight saving time in germany and I have to read first questions about WordPress and daylight saving time.
So please remember:
WordPress does switch daylight saving automatically if you have selected a Country, region or City as your timezone at Settings – General.
If you have selected GMT+1 or GMT+2 which is the name of a fixed timezone, WordPress will set you Blog to GMT+1 or GMT+2 without calculating any daylight saving.
Anyway, in the summertime, when the weather is fine…. 🙂