Set the alarm clock for 3:59 am

 

Leave this tab open — the alarm only rings while the tab stays open.

The alarm goes off in: ::
 
 

Going to bed for a 3:59 am alarm

  • Asleep by 6:44 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 8:14 pm — 5 full sleep cycles, about 7 hours
  • Asleep by 9:44 pm — 4 full sleep cycles, about 6 hours

A sleep cycle runs about 90 minutes, and most people take around 15 minutes to drop off. Waking at the end of a cycle feels easier than waking in the middle of one.

Online alarm clock for 3:59 am

You’re finishing the net check before low tide in the Bay of Islands, ready to pack up and head away from the shore. An alarm for 3:59 am gives you a clear cue without interrupting the last part of the job, while 4:00 am marks a natural point to leave. Once you set off, do not rely on this browser alarm as the only reminder for the nets: it may stay silent if you have closed it or allowed your phone to sleep.

Before your hands are occupied with ropes and gear, check where the alarm sound will play. A phone may quietly remain connected to earbuds tucked inside a jacket or bag, making the alert easy to miss beside wind and water. Set 3:59 am, test the volume, and disconnect or remove the headphones if you want the sound to come from the phone itself. Keep the alarm page running until it rings.

Moving away from the water before dawn is easier when the light has already been sorted. At this hour, the shore and track can still be fully dark, even if lights are visible across the bay. Place a torch beside the gear you will carry, check its batteries earlier, and avoid leaving it at the far end of the work area. A low, steady light can also help you gather the final items without losing sight of the route back.