Set the alarm clock for 11:51 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 11:51 am alarm

  • Asleep by 2:36 am — 6 full sleep cycles, about 9 hours
  • Asleep by 4:06 am — 5 full sleep cycles, about 7 hours
  • Asleep by 5:36 am — 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.

11:51 am across the country

Sydney11:51 am
Brisbane11:51 am
Adelaide11:21 am
Perth9:51 am
Darwin11:21 am

Times are worked out live in your browser, so daylight saving is already accounted for.

Online alarm clock for 11:51 am

Finish the shop unloading, clear the last trolley and set an alarm for 11:51 am before heading out. It gives you a firm point to stop checking cartons, return shared gear and leave the loading area. With 12:00 pm approaching, the signal can keep a final small task from turning into another stretch of work.

A loading bay can easily drown out a quiet alarm with pallet jacks, reversing beeps and roller doors. Set the volume high enough to be heard from where you are working, then play a brief test signal before continuing. Keep the browser running and the computer awake: otherwise, the alarm will make no sound, and the shop unloading may continue past your planned departure.

Late-morning shop activity often grows louder as lunchtime traffic builds and staff move stock before noon. At 11:51 am, keep the alarm close rather than leaving it near the office or inside a bag. If hearing protection is required in the loading area, pair the sound with a visible screen nearby, while continuing to follow the shop’s safety procedures.

Common questions

What happens once the alarm goes off?

It rings through your device's speakers on a loop until you stop it from this page. There's no separate app notification, so make sure your volume is turned up before you rely on it.

Is this alarm accurate across daylight saving time?

It uses your device's local clock, so as long as your computer's time and date settings are correct, it'll adjust automatically when daylight saving time starts or ends.

Can I use this on my phone instead of a laptop?

Yes, it works in a mobile browser the same way, but phones are more likely to lock the screen or sleep, which can stop the alarm from ringing. A laptop or desktop tends to be more reliable for this.

Can I set more than one alarm at a time?

This page is built around a single alarm at a time. For multiple alarms, open a separate tab for each one and set a different time in each, keeping every tab open until it's rung.