Set the alarm clock for 10:58 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 10:56 am Alarm clock for 10:57 am Alarm clock for 10:59 am

Going to bed for a 10:58 am alarm

Asleep by 1:43 am — 6 full sleep cycles, about 9 hours
Asleep by 3:13 am — 5 full sleep cycles, about 7 hours
Asleep by 4:43 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.

10:58 am across the country

Sydney	10:58 am
Brisbane	10:58 am
Adelaide	10:28 am
Perth	8:58 am
Darwin	10:28 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 10:58 am because their phone alarm gets silenced by early notifications; others just want a second, louder reminder. Either way, pick 10:58 am, choose a sound, press start, and leave the tab open. It'll ring at 10:58 am until you close it or hit stop.

Choose a sound before you press Start — something like a chime or a classic bell tends to work better than anything too gentle. Once it's running, the countdown happens right here in the browser, which means the tab needs to stay open in the background rather than being closed.

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 10:58 am is written 10:58, and spoken aloud it's two minutes to eleven in the morning. Timetables and rosters may show it as 10:58, and handwritten notes as 10.58 am. Whether you would say set alarm for 10:58 am or put an alarm on for 10:58 am, the steps are the same: pick a sound, press Start, leave the tab open.

Common questions

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.

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.