Set the alarm clock for 4:28 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 4:28 am alarm

  • Asleep by 7:13 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 8:43 pm — 5 full sleep cycles, about 7 hours
  • Asleep by 10:13 pm — 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.

4:28 am across the country

Sydney4:28 am
Brisbane4:28 am
Adelaide3:58 am
Perth2:28 am
Darwin3:58 am

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

Online alarm clock for 4:28 am

You are halfway through another job when the 4:28 am alarm pulls you away to check the newborn lambs before the morning frost. It gives you enough time to finish the immediate task, grab what you need and reach the lambing paddock before 5:00 am without turning the break into a rushed scramble.

Because this alert is tied to the lamb check, leave the alarm page visible while you continue working nearby and keep your sound turned up. A browser may give less attention to a tab sent into the background, particularly after you switch between apps. Closing the browser or letting your phone sleep can silence the alarm, so the lamb check may be missed; use a separate clock alarm if you cannot keep the page awake.

A pre-dawn lamb check can feel colder than the forecast suggests when damp air settles across an Australian paddock. At 4:28 am, take a dry outer layer and a torch that leaves one hand free, then watch for wet grass around gates and troughs. Moisture on rails and latches can make them slippery, while still night air may keep low areas noticeably cooler before first light.

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.