Set the alarm clock for 11:38 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 11:36 am Alarm clock for 11:37 am Alarm clock for 11:39 am Alarm clock for 11:40 am

Going to bed for a 11:38 am alarm

Asleep by 2:23 am — 6 full sleep cycles, about 9 hours
Asleep by 3:53 am — 5 full sleep cycles, about 7 hours
Asleep by 5:23 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.

11:38 am across the country

Sydney	11:38 am
Brisbane	11:38 am
Adelaide	11:08 am
Perth	9:38 am
Darwin	11:08 am

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

Online alarm clock for 11:38 am

Waiting for your beginner surfing lesson to start at 11:38 am can make every glance at the clock feel necessary. Set the alarm for the appointed time, then keep your wetsuit, towel and water together while you wait. With 12:00 pm approaching, you will still know exactly when to meet the instructor rather than guessing from the position of the sun.

Your surfing lesson depends on hearing the signal, so test the alarm now while there is time to adjust the volume. Choose a temporary alarm a minute ahead, confirm that its sound is clear above nearby conversation, then remove the test and set 11:38 am again. Keep your phone awake with this page running; otherwise the alarm for the surfing lesson will not sound, which could leave the group waiting at the beach.

Before stepping out for a late-morning lesson, move gradually from strong air conditioning into the warmer coastal air. Pack your gear beside the exit so nothing is left behind during the change, and keep drinking water within reach. By 11:38 am, exposed sand and car interiors may already feel much hotter than an air-conditioned room, so avoid leaving your towel, water or footwear in direct sun while you wait.

Common questions

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.

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.