Set the alarm clock for 4:27 pm

 

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

The alarm goes off in: ::
 
 

4:27 pm across the country

Sydney4:27 pm
Brisbane4:27 pm
Adelaide3:57 pm
Perth2:27 pm
Darwin3:57 pm

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

How to use the online alarm clock

An afternoon alarm at 4:27 pm works well for anyone who's ducked away for a quick rest and doesn't trust themselves to wake up on their own. Set the time, choose a tone, and leave the tab open. It'll ring at 4:27 pm through your laptop or desktop speakers.

After picking a tone, press Start and leave the page open. It doesn't need an internet connection once it's running, but it does need the tab itself to stay open, so avoid closing the browser or letting the device fall asleep before the time is reached.

Some people use this alongside a phone alarm rather than instead of it: a louder backup through laptop speakers, or a way to set a reminder without touching a phone at all. It won't survive the tab closing or the device sleeping, so for anything critical overnight, keep a second alarm running as well. On a 24-hour clock 4:27 pm is written 16:27, and spoken aloud it's twenty-seven minutes past four in the afternoon. Timetables and rosters may show it as 16:27, and handwritten notes as 4.27 pm. Set an alarm for 4:27 pm, set the alarm to 4:27 pm, set my alarm for 4:27 pm — all of it lands on this page and does the same thing.

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.