Set the alarm clock for 11:13 am

 

Leave this tab open — the alarm only rings while the tab stays open.

The alarm goes off in: ::
 
 

Going to bed for a 11:13 am alarm

  • Asleep by 1:58 am — 6 full sleep cycles, about 9 hours
  • Asleep by 3:28 am — 5 full sleep cycles, about 7 hours
  • Asleep by 4:58 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.

11:13 am across the country

Sydney11:13 am
Brisbane11:13 am
Adelaide10:43 am
Perth9:13 am
Darwin10:43 am

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

Online alarm clock for 11:13 am

As you hand the school run over to someone else, make 11:13 am the agreed cue that your child needs to leave for the school’s prep class. A clear alarm prevents the changeover from becoming a vague “sometime before lunch” arrangement, while still leaving room to check the bag, water bottle and hat before 12:00 pm.

For this handover, the sound should match where the other person will be waiting. A gentle tone can work in a quiet kitchen, whereas a more persistent one is easier to notice amid conversation, dishes or a television. The alarm relies on the browser remaining open and the phone or computer staying awake, so it cannot safeguard your child’s school departure after either shuts down. A separate phone alarm is sensible when missing the cue would leave the school run uncovered.

Late-morning Australian light can make a screen look dim just when the 11:13 am cue appears. Before passing responsibility across, leave the phone where daylight will not reflect directly from the display, and raise the screen brightness enough for the alarm message to be readable. If curtains or blinds are likely to be closed, place the phone near the bag so the sound and message stay connected to the prep-class departure.

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.