Set the alarm clock for 5:43 am

 

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

The alarm goes off in: ::
 
 

You can also try the other alarm clocks

Alarm clock for 5:41 amAlarm clock for 5:42 amAlarm clock for 5:44 amAlarm clock for 5:45 am
All alarms from 5:00 am to 5:59 am →

Going to bed for a 5:43 am alarm

  • Asleep by 8:28 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 9:58 pm — 5 full sleep cycles, about 7 hours
  • Asleep by 11:28 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.

Related tools

Online timerOnline stopwatchCountdownDate calculatorsCalendar and datesPublic holidaysAll tools →

Online alarm clock for 5:43 am

Hand over the albatross hide to the next observer at 5:43 am, leaving enough detail for them to settle quietly before 6:00 am. Mention where the birds were last seen, which viewing slit you used, and whether anyone is expected along the track. A calm changeover keeps voices and torchlight away from the colony.

While the new observer takes position, keep the alarm page visible or check that your browser still allows it to run in the background. Some phones may slow or suspend a page after you switch to maps, messages, or the camera, so the alarm can be late. The albatross handover also needs another alarm source if you close the page or let the phone sleep, because this browser alarm will not sound then.

For an early trip to the hide, work backwards from the 5:43 am alarm using the actual drive and walking time, rather than a daytime estimate. New Zealand rural roads can be dark, narrow, or shared with stock, and the final track may take longer before dawn. Allow a quiet margin for parking, closing gates, and covering the last stretch without rushing; keep the route ready offline if reception near the colony is patchy.

Common questions

Can I use the alarm as my signal to leave for a ferry or flight?

Yes, as a personal reminder, but it cannot see check-in requirements, queues, cancellations, Cook Strait wind, road closures, or delays on the way to the terminal. Confirm the operator's current advice and set the time with enough margin for the entire journey.

Is this alarm suitable for medicine, cooking, or safety checks?

It may be one reminder, but it cannot verify a dose, inspect food, or monitor a hazard. Follow the relevant instructions and supervise risks directly. Keep a reliable backup whenever a missed alert could affect health or safety, and check the device remains powered and audible.

Will the alarm sound if I switch to another tab?

It can, as long as the alarm page stays open and the browser continues running. Device sleep, a flat battery, silent mode, blocked browser audio, or Bluetooth connected elsewhere may prevent you hearing it. Test the tone first and use a second alarm for anything consequential.

Does daylight saving change the alarm time?

The alarm follows the clock and time zone reported by your device. Clocks move forward in September and back in April, so confirm the displayed date and time after a change. Check overseas invitations carefully because other places may change clocks on different dates or not at all.