Set the alarm clock for 4:29 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 4:27 am Alarm clock for 4:28 am Alarm clock for 4:30 am Alarm clock for 4:31 am

Going to bed for a 4:29 am alarm

Asleep by 7:14 pm — 6 full sleep cycles, about 9 hours
Asleep by 8:44 pm — 5 full sleep cycles, about 7 hours
Asleep by 10:14 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.

4:29 am across the country

Sydney	4:29 am
Brisbane	4:29 am
Adelaide	3:59 am
Perth	2:29 am
Darwin	3:59 am

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

Online alarm clock for 4:29 am

You are just waking at 4:29 am, with the café still dark and the first job untouched. Setting an alarm now gives you a clear cue to get up, dress and begin preparing the counter, coffee machine and front door before the 5:00 am opening. Those 31 minutes can cover the essentials, provided you leave promptly and keep the opening routine simple.

Your café preparations depend on hearing the alert, so check whether silent mode will suppress browser audio on your phone. Set the volume high enough to notice from across the room and test the sound before relying on it. This browser alarm cannot ring once its page is closed or the phone has gone to sleep, which could leave the café unprepared at opening time; use a separate phone alarm as a backup if you may doze again.

Getting to the café before dawn may mean quieter Australian roads, but allow for the actual drive rather than assuming every light will favour you. Check your usual route, add a few minutes for parking and unlocking, and place your keys beside anything you must take. At 4:29 am, a small delay at home can consume much of the available travel margin before five.

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.