1. Open the application:

 

2. Change to 24Hr time format:

 

3. Switch to Calendar:

 

4. Browse to any day, month, or year:

 

5. Click on "Today" to go back to the current day:

 

6. Adjust the alarm time:

 

7. Click on "Set Alarm!" to set the alarm:

 

8. Don't forget to enable the alarm if you want it to go off:

 

9. Check "Mute" if you want a quiet alarm, otherwise leave it alone:

 

10. When the time is right: