Set the alarm clock for 7:21 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 7:19 am Alarm clock for 7:20 am Alarm clock for 7:22 am Alarm clock for 7:23 am

Going to bed for a 7:21 am alarm

Asleep by 10:06 pm — 6 full sleep cycles, about 9 hours
Asleep by 11:36 pm — 5 full sleep cycles, about 7 hours
Asleep by 1:06 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.

7:21 am across the country

Sydney	7:21 am
Brisbane	7:21 am
Adelaide	6:51 am
Perth	5:21 am
Darwin	6:51 am

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

Online alarm clock for 7:21 am

Wrap up the rugby team’s training at 7:21 am, gather the balls and cones, and leave enough time for everyone to get changed before school. An alarm set for this moment marks a clear finish instead of letting one last drill stretch towards 8:00 am. It also helps players head off together rather than drifting away at different times.

After a noisy session, place the phone close enough for the alarm to be heard while gear is being packed. Set the volume above the chatter, bouncing balls and traffic near the oval, then check that silent mode will not suppress the sound. Keep the alarm page active and the phone awake until it rings; otherwise the rugby training reminder may never sound, leaving the team late to depart.

Players leaving the oval this early may step from a damp field into air that already feels warm and heavy, especially during a humid Australian summer. Keep a dry shirt near the top of the kit bag and allow a moment to cool down before putting on a school uniform. On muggy mornings, packing wet training gear separately also stops it soaking books, clothes or anything needed later in the day.

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.