Set the alarm clock for 4:06 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 4:04 am Alarm clock for 4:05 am Alarm clock for 4:07 am Alarm clock for 4:08 am

Going to bed for a 4:06 am alarm

Asleep by 6:51 pm — 6 full sleep cycles, about 9 hours
Asleep by 8:21 pm — 5 full sleep cycles, about 7 hours
Asleep by 9:51 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.

4:06 am across the country

Sydney	4:06 am
Brisbane	4:06 am
Adelaide	3:36 am
Perth	2:06 am
Darwin	3:36 am

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

Online alarm clock for 4:06 am

Preparing early for the last bus means setting the 4:06 am alarm before the trip becomes urgent. That precise minute can be the cue to gather your keys, travel card and jacket, knowing another service may not follow. By 5:00 am, a taxi could be the remaining option, so this alarm marks when you need to be ready to leave for the stop.

Because the last bus matters, the signal deserves a rehearsal while there is time to correct it. Starting a short test lets you hear the selected tone through the same speakers and at the same volume you expect later. Muted audio or a faint signal can then be fixed in advance. If this browser page is closed or the phone or laptop falls asleep, the alarm cannot sound, and the last bus could leave without you.

Waiting to head out around 4:06 am can make a bright screen uncomfortable against a dark room. A low but readable brightness and a warmer display setting reduce glare while you confirm the alarm time. Afterwards, placing the screen face down keeps light away from your eyes while the browser remains running and the device stays awake. Position the charging lead clear of your bag and shoes so standing up in the dark is straightforward.

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.