Well, you know the timezone: it's of wherever in Germany the meeting will take place. I think the problem is the display: since you know you'll be in Germany f

Well, you know the timezone: it's of wherever in Germany the meeting will take place. I think the problem is the display: since you know you'll be in Germany from date X to Y, you should be able to configure the presentation timezone for those days (which would also show you those meetings in the local time when you'll have to make them).