RESSENCE TYPE 3 Owner's Manual page 11

Date Setting
3. 4.
3. Move the time forward ( over 24h00 ) till at least 00h10.
> the date will jump one position ( one day )
if needed:
Repeat step 2 and 3 until the correct date is set.
Note: It is only possible to add one day, so stop in time.
4. Set the time once the correct date is set