Set the alarm clock for 9:31 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 9:29 am Alarm clock for 9:30 am Alarm clock for 9:32 am Alarm clock for 9:33 am

Going to bed for a 9:31 am alarm

Asleep by 12:16 am — 6 full sleep cycles, about 9 hours
Asleep by 1:46 am — 5 full sleep cycles, about 7 hours
Asleep by 3:16 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.

9:31 am across the country

Sydney	9:31 am
Brisbane	9:31 am
Adelaide	9:01 am
Perth	7:31 am
Darwin	9:01 am

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

How to use the online alarm clock

Some people set this for 9:31 am because their phone alarm gets silenced by early notifications; others just want a second, louder reminder. Either way, pick 9:31 am, choose a sound, press start, and leave the tab open. It'll ring at 9:31 am until you close it or hit stop.

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.

Because this runs in the browser rather than on the phone's operating system, it sidesteps silent mode and do-not-disturb entirely, useful if your phone alarm has ever failed to go off for exactly that reason. Just be aware it needs the tab open and the screen or laptop lid to stay on to actually ring. On a 24-hour clock 9:31 am is written 09:31, and spoken aloud it's twenty-nine minutes to ten in the morning. Timetables and rosters may show it as 09:31, and handwritten notes as 9.31 am. Set an alarm for 9:31 am, set the alarm to 9:31 am, set my alarm for 9:31 am — all of it lands on this page and does the same thing.

Common questions

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.

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.