Fixed.
http://www.pi-sync.net/html/ko_pi_faq.htmlQ:
How do I change the timezone? All my appointments do show 6 hours ahead.
A:
The default timezone in KO/Pi is CET.
CET is (GMT +01:00) or (UTC +01:00), i.e GMT=UTC .
To adjust the time of your appointments,
you have to change the timezone and reload your calendar without closing
the application and without saving the data.
"Without saving the data" is very important.
Note that KO/Pi has build in auto saving.
If auto saving is performed after changing the timezone and before
reloading your calendar no times will be changed.
Example:
Selected timezone in KO/Pi is (+01:00 Oslo).
You have an appointment shown at 8:00. But it should be at 14:00.
Your timezone is -05:00 US/Eastern.
You have to do:
Select timezone +07:00 Asia/Bangok in config dialog.
Close dialog with ok button.
Choose menu: File-Load Calendar Backup.
Choose file: (your home path)/Applications/korganizer/mycalendar.ics
(on Windows: file: (your home path)/korganizer/mycalendar.ics).
Load file.
Now your appointment is at 14:00.
Select timezone -05:00 US/Eastern in config dialog.
Close KO/Pi (file is saved when closing and changes are not yet saved).
Restart KO/Pi.
Your timezone is -05:00 US/Eastern.
Your appointment is at 14:00.
Everything is ok.