Set the alarm clock for 4:24 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 4:22 am Alarm clock for 4:23 am Alarm clock for 4:25 am Alarm clock for 4:26 am

Going to bed for a 4:24 am alarm

Asleep by 7:09 pm — 6 full sleep cycles, about 9 hours
Asleep by 8:39 pm — 5 full sleep cycles, about 7 hours
Asleep by 10:09 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.

4:24 am across the country

Sydney	4:24 am
Brisbane	4:24 am
Adelaide	3:54 am
Perth	2:24 am
Darwin	3:54 am

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

Online alarm clock for 4:24 am

You are only just awake at 4:24 am, with the lights still off and your early departure not yet under way. This alarm can mark the moment to message your neighbours that you are leaving before daylight, rather than relying on a sleepy memory. There is still time to get dressed, gather your keys and send that warning before 5:00 am.

Your neighbours need the warning before the household becomes busy, so the alarm signal is worth checking while there is time to change the volume or sound. A short test now confirms that the browser can make an audible alert under your current settings. If the page is later closed or the phone falls asleep, the browser alarm may stay silent and leave your neighbours unaware that you are heading out; a separate phone alarm provides a sensible fallback.

Leaving home in the night can mean a quicker run on familiar Australian roads, but roadworks, wildlife and limited street lighting may still affect the trip. Allow a few minutes beyond the usual driving time, especially if the route includes rural stretches or an unfamiliar turn. Keeping the keys and anything going into the car together also reduces the chance of losing those quieter-road minutes searching indoors.

Common questions

Do I need to create an account or download anything?

No, there's nothing to sign up for and nothing to install. Pick a time and a sound, press Start, and it runs entirely in this browser tab.

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.