You can set as many non-repeating alarms as you like, as long as they're within the next 24 hours.
What kind of event are you creating an alarm for that's more than a day away? On Friday, do you create your alarm to wake up on Monday? Does Android have a calendar-like view of your upcoming alarms?
(Sorry for the barrage of questions, but this is interesting to me.)
I frequently use one-time alarms for early morning travel a few days away. What makes them great is that the alarms in general are much more robust in their requirements to turn them off; I can accidentally dismiss a calendar alert, but I have a much harder time accidentally deactivating the clock alarm in a sleep induced stupor at odd hours.
More importantly, alarms don't get silenced by my nightly do not disturb schedule.
>You can set as many non-repeating alarms as you like, as long as they're within the next 24 hours.
Any color as long as it's black, eh?