Alarm time
You can enter the new alarm time you want to be waken up at.
You will have to enter the hour and minutes at least. Seconds
are not needed, but can be specified. Any errors in the alarm
time string will result in a restore of the previously used.
If your digits are too high KCommodity will recalc the time to
reflect correct values.

This is the form your alarm string should take :

                             HH:MM[:SS]

