Set the alarm clock for 10:10 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 10:08 am Alarm clock for 10:09 am Alarm clock for 10:11 am Alarm clock for 10:12 am

Going to bed for a 10:10 am alarm

Asleep by 12:55 am — 6 full sleep cycles, about 9 hours
Asleep by 2:25 am — 5 full sleep cycles, about 7 hours
Asleep by 3:55 am — 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.

10:10 am across the country

Sydney	10:10 am
Brisbane	10:10 am
Adelaide	9:40 am
Perth	8:10 am
Darwin	9:40 am

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

How to use the online alarm clock

An alarm for 10:10 am works well as a backup for anyone who's slept through a phone alarm before: on a desk, on a laptop, wherever the tab's open. Set it, pick a sound you'll actually hear over the kettle, and it'll go off at 10:10 am sharp.

Pick whichever sound you're most likely to actually notice, then press Start. The alarm is tied to this browser tab, so it needs to stay open. Minimising the window is fine, but closing the tab or the browser will stop the countdown before it ever rings.

Compared to a phone, this alarm has one job and nothing else competing for attention — no messages, no app switching. It's free and doesn't ask for sign-up, but it only works while the tab is open and the device stays awake, so it suits daytime use at a desk better than an overnight bedroom alarm. On a 24-hour clock 10:10 am is written 10:10, and spoken aloud it's ten past ten in the morning. Written the Australian way that's 10.10 am, and typed in a hurry it's often 10:10am. Setting the alarm to 10:10 am tomorrow morning works the same way: if the time has gone for today, the count runs through to it.

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.