Set the alarm clock for 3:30 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 3:30 am alarm

  • Asleep by 6:15 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 7:45 pm — 5 full sleep cycles, about 7 hours
  • Asleep by 9:15 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.

3:30 am across the country

Sydney3:30 am
Brisbane3:30 am
Adelaide3:00 am
Perth1:30 am
Darwin3:00 am

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

Online alarm clock for 3:30 am

Waiting for 3:30 am in a parked camper can make every rustle seem like the signal to start packing. This alarm marks the chosen moment, leaving half an hour before 4:00 am to fold bedding, secure loose gear and bring the awning in while the campground is still dark. Until then, the remaining rest can stay separate from the job ahead.

A camper can be packed quietly, but headphones may also take the alarm sound without their wearer noticing the connection. Checking the audio destination beforehand avoids a silent speaker at the crucial moment; disconnecting unused headphones or confirming the alert through them makes the setup predictable. The alarm also needs the browser to keep running and the computer or phone to remain awake—otherwise it cannot signal when it is time to close the camper and leave the site.

Packing before dawn often means meeting damp canvas, cool outside air and condensation on chairs or tables. A dry cloth kept near the door saves rummaging when wet surfaces need a quick wipe, while a ventilated spot for damp items keeps them away from bedding. At 3:30 am, a light jacket placed with the keys is easier to find than one buried under packed gear, especially at inland Australian campsites where the air can feel markedly cooler before sunrise.

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.