Set the alarm clock for 5:57 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 5:55 am Alarm clock for 5:56 am Alarm clock for 5:58 am Alarm clock for 5:59 am

Going to bed for a 5:57 am alarm

Asleep by 8:42 pm — 6 full sleep cycles, about 9 hours
Asleep by 10:12 pm — 5 full sleep cycles, about 7 hours
Asleep by 11:42 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.

5:57 am across the country

Sydney	5:57 am
Brisbane	5:57 am
Adelaide	5:27 am
Perth	3:57 am
Darwin	5:27 am

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

Online alarm clock for 5:57 am

As you hand responsibility for the school oval to the next person, set the alarm for 5:57 am so the irrigation can be switched on before classes. That leaves a clear handover point just ahead of 6:00 am: you can explain which zone is ready, who has the controls and what still needs checking.

With pumps, sprinklers or maintenance vehicles nearby, choose a signal volume that can be heard above the background noise, then test it from where the handover will happen. Keep the browser active and the computer awake; otherwise the alarm may not sound and the school oval irrigation could start late. A separate backup on the incoming person’s phone can cover the changeover if the surroundings are especially noisy.

Before dawn, keep the handover notes visible without making the screen painfully bright against the dark grounds. Lower the display brightness, use a warmer colour setting if available, and place the screen where you can glance at 5:57 am without staring into it. Once the oval and controls are visible in the growing light, check the irrigation directly rather than relying only on the display.

Common questions

Does the alarm work if my laptop goes to sleep?

Not reliably. If the device sleeps or the screen locks, the browser tab pauses along with it, so the alarm may not fire on time or at all. Adjust your power settings if you're relying on this over a longer stretch.

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.