Set the alarm clock for 8:24 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 8:22 am Alarm clock for 8:23 am Alarm clock for 8:25 am Alarm clock for 8:26 am

Going to bed for a 8:24 am alarm

Asleep by 11:09 pm — 6 full sleep cycles, about 9 hours
Asleep by 12:39 am — 5 full sleep cycles, about 7 hours
Asleep by 2:09 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.

8:24 am across the country

Sydney	8:24 am
Brisbane	8:24 am
Adelaide	7:54 am
Perth	6:24 am
Darwin	7:54 am

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

How to use the online alarm clock

If mornings mean footy training drop-offs, an early meeting, or getting the kids to school on time, 8:24 am is worth locking in properly. This rings straight from your browser at 8:24 am, and keeps ringing until you tell it to stop. No phone required nearby.

After picking a tone, press Start and leave the page open. It doesn't need an internet connection once it's running, but it does need the tab itself to stay open, so avoid closing the browser or letting the device fall asleep before the time is reached.

A browser alarm like this one is handy when your phone's on silent, charging in another room, or you just don't want to unlock it and get pulled into notifications. The trade-off is honesty: it only rings while this tab stays open, so it's not a replacement for your phone alarm on a trip where the laptop lid might close. On a 24-hour clock 8:24 am is written 08:24, and spoken aloud it's twenty-four minutes past eight in the morning. Timetables and rosters may show it as 08:24, and handwritten notes as 8.24 am. Set an alarm for 8:24 am, set the alarm to 8:24 am, set my alarm for 8:24 am — all of it lands on this page and does the same thing.

Common questions

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.

Is there a cost to use this?

No, it's free, with no sign-up and no limit on how many times you set it. It just needs the tab left open until the time you've chosen arrives.

Will the alarm still ring if I close the browser tab?

No. The alarm only runs while this tab stays open — closing it, or closing the browser entirely, stops the countdown before it can ring. Keep the tab open in the background if you need it to go off later.