Kerio Tech Version 6.5.2 - Manual (Page 136)

Chapter 1 Kerio WebMail
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You live in London. Your time zone is GMT +0. A friend from New York invites you for a lunch
and you arrange a meeting with him for 14:00 hours. Keep in mind that your friend means
14:00 in his time zone, i.e. in GMT -5 (Eastern Time). You have to switch to the friend’s time
zone in Kerio WebMail and create an event with beginning at 14:00.
Example 2:
Imagine the previous (Example 2) event, but from the other point of view. If your friend sends
an invitation for 14:00, it will be displayed as a meeting at 20:00 in your time zone (including
daylight saving time). However if you switch the time zone to Eastern Time after you arrive to
New York, the meeting will show the correct time — 14:00.
Behavior of the Free/Busy calendar
The events in Kerio MailServer are stored together with the information about the time zone
in which they were created as well as the daylight savings time (if specified). Thus, it does not
matter in which time zone the event was created. The present status will be displayed in the
Free/Busy (the free/busy information for individual attendees is converted to the time zone
specified in your Kerio WebMail).