Set the alarm clock for 10:48 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 10:46 am Alarm clock for 10:47 am Alarm clock for 10:49 am Alarm clock for 10:50 am

Going to bed for a 10:48 am alarm

Asleep by 1:33 am — 6 full sleep cycles, about 9 hours
Asleep by 3:03 am — 5 full sleep cycles, about 7 hours
Asleep by 4:33 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.

10:48 am across the country

Sydney	10:48 am
Brisbane	10:48 am
Adelaide	10:18 am
Perth	8:48 am
Darwin	10:18 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 10:48 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 10:48 am sharp.

There's a short list of sounds to choose from before you press Start — pick one that suits how deep a sleeper you are. Once it's set, the page keeps time in the background of your browser, and it'll sound at the moment you selected, provided the tab hasn't been closed.

Unlike a phone alarm, this one won't ring if you close the tab, put the computer to sleep, or shut the lid, so it suits a desk, a kitchen bench, or anywhere the device stays powered on and awake. It's free to use and doesn't need an account, but it's not built for unattended overnight use. On a 24-hour clock 10:48 am is written 10:48, and spoken aloud it's twelve minutes to eleven in the morning. You'll also see it written 10.48 am — a full stop instead of the colon means the same time. If you need it loud, turn the system volume up before you start: the alarm plays at whatever the device is set to.

Common questions

Does the alarm work if my laptop goes to sleep?

Not reliably. If the device sleeps or the screen locks, the browser tab pauses along with it, so the alarm may not fire on time or at all. Adjust your power settings if you're relying on this over a longer stretch.

Do I need to create an account or download anything?

No, there's nothing to sign up for and nothing to install. Pick a time and a sound, press Start, and it runs entirely in this browser tab.

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.