Gewiss 90 AM Serie Manual Del Usuario página 29

The following settings are possible:
AUTO
Factory presetting of the published
calendar dates. This is automatically
recalculated for each year.
NO
No switchover
CALIBRAT
Programming. The start date of the
summer time and winter time must
be entered for this purpose.
The factory presetting is overwritten.
The programmed summer/ winter
time is automatically recalculated for
each year.
The changeover takes place on the
same specified day of the week in the
same week of each month.
Example
03/21 Start summer time
10/31 Start winter time
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