Alecto AK-20 Guide De L'utilisateur page 29

The synchronizing process will take several minutes.
During summer time the "DST" icon appears. DST stands for
Daylight Saving Time.
To manually set the time:
If it's not possible to receive the DCF-77-signal, you may set
the clock time manually. During the manual setup, several other
functions may be set.
Press and hold the "TIME SET" button for 3 seconds until the
time zone starts flashing. Use the "+" and "-" buttons to set the
values. Press the "TIME SET" button to confirm each step and
to go to the next setting. You may set the following functions.
time zone hours minutes seconds
year month day °C or °F
day display language
Time zone: For countries with the same time as Germany,
set the time zone to "0". For countries outside Germany's time
zone, the time zone should be adjusted. When using the DCF-
77 time, Germany is considered as time zone "0".
12/24 hours: Press the "+" button to switch between 12 hours
and 24 hours display format.
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