Set the alarm clock for 3:05 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 3:03 am Alarm clock for 3:04 am Alarm clock for 3:06 am Alarm clock for 3:07 am

Going to bed for a 3:05 am alarm

Asleep by 5:50 pm — 6 full sleep cycles, about 9 hours
Asleep by 7:20 pm — 5 full sleep cycles, about 7 hours
Asleep by 8:50 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.

3:05 am across the country

Sydney	3:05 am
Brisbane	3:05 am
Adelaide	2:35 am
Perth	1:05 am
Darwin	2:35 am

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

Online alarm clock for 3:05 am

Before turning in, let your neighbours know that you’re planning to leave while it’s still dark, then set the alarm for 3:05 am as part of that preparation. It gives everyone warning before you start moving through the house, and leaves you time to collect your keys, bag and anything waiting by the door well before 4:00 am.

Because this departure depends on a very early signal, test the sound now rather than discovering a problem in the dark. Set a short trial alarm, keep the volume at the level you intend to use, and check that you can hear it from where you’ll sleep. The alarm will not sound after its browser page is closed or the computer falls asleep, which could leave your neighbours expecting a departure that never starts on time.

For a 3:05 am start, prepare the noisy parts of leaving before bed: place shoes by the exit, stop loose keys from rattling, and avoid dragging a suitcase across hard floors. A brief message to anyone else in the house can clarify which door you’ll use and whether a porch light will come on. That keeps your pre-dawn departure predictable for people who are still asleep.

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.