Set the alarm clock for 11:40 pm

 

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

The alarm goes off in: ::
 
 

11:40 pm across the country

Sydney11:40 pm
Brisbane11:40 pm
Adelaide11:10 pm
Perth9:40 pm
Darwin11:10 pm

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

How to use the online alarm clock

If you're clocking on for a night shift around 11:40 pm, relying on a phone alarm across the room isn't always enough. This rings straight from your browser at 11:40 pm, loud enough to cut through a quiet house before you head out the door.

Pick whichever sound you're most likely to actually notice, then press Start. The alarm is tied to this browser tab, so it needs to stay open. Minimising the window is fine, but closing the tab or the browser will stop the countdown before it ever rings.

Compared to a phone, this alarm has one job and nothing else competing for attention — no messages, no app switching. It's free and doesn't ask for sign-up, but it only works while the tab is open and the device stays awake, so it suits daytime use at a desk better than an overnight bedroom alarm. On a 24-hour clock 11:40 pm is written 23:40, and spoken aloud it's twenty to twelve at night. Written the Australian way that's 11.40 pm, and typed in a hurry it's often 11:40pm. Setting the alarm to 11:40 pm tomorrow morning works the same way: if the time has gone for today, the count runs through to it.

Common questions

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.

What happens once the alarm goes off?

It rings through your device's speakers on a loop until you stop it from this page. There's no separate app notification, so make sure your volume is turned up before you rely on it.