Set the alarm clock for 5:02 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 5:00 am Alarm clock for 5:01 am Alarm clock for 5:03 am Alarm clock for 5:04 am

Going to bed for a 5:02 am alarm

Asleep by 7:47 pm — 6 full sleep cycles, about 9 hours
Asleep by 9:17 pm — 5 full sleep cycles, about 7 hours
Asleep by 10:47 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.

5:02 am across the country

Sydney	5:02 am
Brisbane	5:02 am
Adelaide	4:32 am
Perth	3:02 am
Darwin	4:32 am

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

Online alarm clock for 5:02 am

You’re already watching birds between mangrove roots when the 5:02 am alarm is due, so it needs to pull your attention away from the mudflat without startling everything nearby. The alert marks a clean stopping point for packing the binoculars or moving to the next viewing spot, while 6:00 am remains far enough away that waiting for the round hour would change the outing.

Among quiet mangroves, a soft tone can be enough if the phone is close, whereas a more insistent sound suits a bag or pocket where it may be muffled. The selected tone and volume can be checked before you settle in, avoiding a harsh surprise among feeding birds. Because this alarm runs in the browser, closing its tab or letting the device sleep means no sound will interrupt your birdwatching.

Before dawn fully lifts over the water, the screen can be the brightest object in your field of view. Lowering its brightness and switching to a warmer display setting before 5:02 am helps preserve the dim surroundings you came to observe. Once the alert has sounded, keeping a small torch pointed towards the ground makes it easier to pack up without throwing white light across the mangroves.

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.