In general the timezone is configured in the user profile of each
user, so changing the server timezone has no effect how to the users
calendar for example.
However there are some circumstances where there is no user profile
available.
<!--
First day in the Week used by the Calendar
0 means Sunday
1 means Monday
this is the way how the Celendar inits a week
-->
<firstdayinweek>0</firstdayinweek>