I could be being thick (fairly usual). But this would only work for a static alarm clock, or one that I intended to update on a minimal basis.
The scenario I'm thinking is if me and my good lady decide to take a nap, but we want to get up in an hour, I would say "Chloe, set an alarm for 18:30".
Since I posted I started fiddling, and have so far managed to get her to set an alarm for in 15 seconds time by using SetEventTimer and then having a payload range of 10,15,20,25,30,35,40,45,50,55. She then puts the lights on dim and plays a playlist in XBMC
I can obviously say to her, "Chloe set an alarm for 900" and she would wake me up in 900 seconds/15 minutes, but what's the easiest way to tell her 15 minutes and her understand me?
Sorry to ask, I can guarantee this is covered somewhere in the Wiki, but whilst I've got your attention
-P