23 hour timer
Press Start and an alarm will ring in exactly 23 hours. Good for a one-meal-a-day fast or a near-full-day countdown.
23 hours is 1,380 minutes, or 82,800 seconds. The timer keeps exact time in a background tab and shows the time left in the tab title. Press Space to pause, R to reset, F for full screen.
Other timers
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Set a custom timer · Stopwatch · Pomodoro timer · Classroom timer