Click on the clock icon.
Type at what time you want to be alarmed by RapDate.
Click on Validate.
The countdown is then displayed in minutes and secondes (or in hours and minutes).
A small red dot 
is blinking, meaning the alarm is in progress.
At the wanted time, a sound alarm and a visual one will warn you.
To cancel the alarm before the end, click on the red dot.
To modify the time of the alarm, click again on the alarm icon.
