Thank's for your suggestions, but somehow it doesn't solve my problem.
Actually, I just want to show to different timezones in my blog using the provided "timezones plugin".
My first time zone is named "at home", with the abbreviation "CET" which produces the correct time for e.g. Germany. The ...

Sorry, I might be to stupid, but I do not comprehend how to set a time zone for my current location Indonesia in the provided timezones plugin.

I have tried all kinds of timezone abbreviations as well as adding something like UTC+7 or +7... nothing is recognized.

Any suggestions or am I missing ...