Set the alarm clock for 11:48 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 11:48 am alarm

  • Asleep by 2:33 am — 6 full sleep cycles, about 9 hours
  • Asleep by 4:03 am — 5 full sleep cycles, about 7 hours
  • Asleep by 5:33 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.

11:48 am across the country

Sydney11:48 am
Brisbane11:48 am
Adelaide11:18 am
Perth9:48 am
Darwin11:18 am

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

How to use the online alarm clock

Shift workers switching over around midday often need an alarm that isn't tied to their phone being nearby. This one rings at 11:48 am straight from the browser tab, so a laptop left open on the kitchen table can do the job just as well.

There's a short list of sounds to choose from before you press Start — pick one that suits how deep a sleeper you are. Once it's set, the page keeps time in the background of your browser, and it'll sound at the moment you selected, provided the tab hasn't been closed.

The advantage of a browser alarm is volume and reliability at a desk: laptop speakers are often louder and easier to hear across a room than a phone left in a bag. The catch is that it depends entirely on the tab staying open; if the browser closes or the laptop sleeps, the alarm won't fire. On a 24-hour clock 11:48 am is written 11:48, and spoken aloud it's twelve minutes to twelve in the afternoon. Timetables and rosters may show it as 11:48, and handwritten notes as 11.48 am. If you need it loud, turn the system volume up before you start: the alarm plays at whatever the device is set to.

Common questions

Can I set more than one alarm at a time?

This page is built around a single alarm at a time. For multiple alarms, open a separate tab for each one and set a different time in each, keeping every tab open until it's rung.

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.