Set the alarm clock for 3:27 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 3:25 am Alarm clock for 3:26 am Alarm clock for 3:28 am Alarm clock for 3:29 am

Going to bed for a 3:27 am alarm

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

3:27 am across the country

Sydney	3:27 am
Brisbane	3:27 am
Adelaide	2:57 am
Perth	1:27 am
Darwin	2:57 am

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

How to use the online alarm clock

Setting an alarm for 3:27 am while everyone else is asleep can feel like cheating the clock, but it's usually just planning ahead for an early departure or a shift that starts before sunrise. This will sound at 3:27 am through your speakers, whether it's the depths of winter or a short summer night.

Using it is simple: pick a ringtone from the list, press Start, and leave this tab open in your browser. The alarm runs entirely on this page, so closing the browser will stop it from going off. Come back a minute early if you're not sure you trust it yet.

It's free to use, doesn't need an account, and works the same in any modern browser, but it's honestly not meant to replace your phone for anything you can't afford to sleep through. Keep the tab open and the device awake, and it'll ring reliably at the time you set. On a 24-hour clock 3:27 am is written 03:27, and spoken aloud it's twenty-seven minutes past three at night. Written the Australian way that's 3.27 am, and typed in a hurry it's often 3:27am. Whether you would say set alarm for 3:27 am or put an alarm on for 3:27 am, the steps are the same: pick a sound, press Start, leave the tab open.

Common questions

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.

Why use a browser alarm instead of my phone's built-in one?

Mainly for reliability against silent mode, do-not-disturb, or a phone left charging out of earshot. It's a useful backup or a desk-based alternative, though it depends on this tab staying open rather than running in the background of your phone.