DuskDial

Every wake time

Every quarter hour of the day has a page. Each one counts back six, five, four and three whole cycles from that moment and prints the bedtime each one asks for.

Late and very early

Nine at night round to five in the morning.

Early morning

Five to nine, where most alarms live.

Later morning

Nine to noon.

Afternoon

Noon to five, which reads as a night shift.

Evening

Five to nine, the other end of a night shift.

Not on the list

The pages stop at quarter hours. An alarm set to 6:07 is three minutes from the 6:15 page and eight from the 6:00 one, and shifting the whole table by those minutes is the sort of sum a reader can do faster than a page can load. If you want it exact, the front page takes any time at all.