This alarm clock supports/supplies:
military and non-military time,
display of time left,
display of time alarm is set to,
display of current time,
flashing colors,
beeping,
the ability to mute the beeping,
etc.

EDIT: Fixed stupid bug which OF COURSE only revealed itself once I had uploaded it. There is another one that I will not tell about because it is a secret. No one would notice except me. There is a feature I would like and some confusing UI issues caused by the time of day at which this was posted, but besides that nothing further has exploded.