Set the alarm clock for 4:36 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 4:36 am alarm

  • Asleep by 7:21 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 8:51 pm — 5 full sleep cycles, about 7 hours
  • Asleep by 10:21 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.

4:36 am across the country

Sydney4:36 am
Brisbane4:36 am
Adelaide4:06 am
Perth2:36 am
Darwin4:06 am

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

Online alarm clock for 4:36 am

Finish checking the low spots for stormwater, then leave knowing the 4:36 am alarm will mark the end of the job. That gives the yard, garage or ground-floor entry one last look before 5:00 am, without turning a quick inspection into the start of the day. Keep a torch handy as you check for pooled water, blocked drains or anything shifted by the storm.

Because this alarm is running in a browser, the screen you use matters while you are away checking for flooding. A phone or laptop that goes to sleep before 4:36 am may not sound, and closing the alarm page can leave the storm inspection without its planned finish signal. Keep the alarm page open, prevent the device from sleeping, connect power if the battery is low, and set the volume high enough to hear from the furthest spot you intend to inspect.

Moving between humid outdoor air and air conditioning before dawn can fog glasses and make a phone screen damp. At 4:36 am, place the device somewhere sheltered from lingering rain and away from the direct blast of an air conditioner, then wipe the screen before handling the alarm. If the house has stayed cool overnight, take a light layer outside so the temperature change does not distract from the final check.

Common questions

Can I change the alarm sound?

Yes, there's a short list of tones to choose from before you press Start. Pick whichever one you're most likely to actually hear — softer sounds are easier to sleep through than a firm chime or bell.

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.