Set the alarm clock for 11:45 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 11:43 am Alarm clock for 11:44 am Alarm clock for 11:46 am Alarm clock for 11:47 am

Going to bed for a 11:45 am alarm

Asleep by 2:30 am — 6 full sleep cycles, about 9 hours
Asleep by 4:00 am — 5 full sleep cycles, about 7 hours
Asleep by 5:30 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.

11:45 am across the country

Sydney	11:45 am
Brisbane	11:45 am
Adelaide	11:15 am
Perth	9:45 am
Darwin	11:15 am

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

Online alarm clock for 11:45 am

You’re watching the clock for the moment to take your child to their school prep class, with bags and shoes already sorted. Set the alarm for 11:45 am so you can wait without repeatedly checking the time. That leaves a practical quarter-hour before 12:00 pm for the drive, parking and walking your child to the classroom.

Keeping the school run on track depends on leaving this browser alarm active after you set it. Check that the displayed time is 11:45 am and keep the sound loud enough to hear from wherever you are waiting. If you close the tab or browser, or let the device sleep, the school alarm may not sound and you could miss the planned departure. Use a separate alarm on your phone when you cannot keep this page open and the device awake.

After your child is settled into prep near the end of the morning, decide in advance whether you intend to sleep when you return home. Set another wake-up time before lying down, allowing for the sleep you want as well as anything scheduled later in the day. Keep keys and school items together so waking up does not turn into a hurried search before the next pickup or family commitment.

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.