Sleep at 3:37 AM

Plan your wake-up time if you sleep at 3:37 AM. This tool optimizes sleep cycles of 90 minutes and considers 15 minutes to fall asleep. Adults: 7-9 hrs, Teenagers: 8-10 hrs, Children: 9-11 hrs, Elderly: 7-8 hrs.

  • 6 cycles
    6:22 PM
    9 hrs
  • 5 cycles
    7:52 PM
    7.5 hrs
  • 4 cycles
    9:22 PM
    6 hrs
  • 3 cycles
    10:52 PM
    4.5 hrs
  • 2 cycles
    12:22 AM
    3 hrs
  • 1 cycles
    1:52 AM
    1.5 hrs
Suggested bedtimes (arrive in bed earlier to allow 15 minutes to fall asleep).
Tip: Sleep cycles average ~90 minutes. Aim for 4–6 full cycles (6–9 hrs).