Set the alarm clock for 4:38 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 4:38 am alarm

  • Asleep by 7:23 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 8:53 pm — 5 full sleep cycles, about 7 hours
  • Asleep by 10:23 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.

4:38 am across the country

Sydney4:38 am
Brisbane4:38 am
Adelaide4:08 am
Perth2:38 am
Darwin4:08 am

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

Online alarm clock for 4:38 am

As you finish packing the camper and prepare to leave the campsite, a 4:38 am alarm keeps the last dark jobs from drifting on. It gives you a clear cue to fold the awning, secure loose gear and check the pitch before pulling away. With 5:00 am approaching, there is still time to complete a calm final walk-around rather than rushing the departure.

During a quiet camper pack-up, headphones can take the alarm sound without making that obvious, especially if they connected automatically overnight. Check where the audio will play before relying on the alert, and set the volume for that output. This browser alarm only works while its page remains open and the phone stays awake; otherwise the camper departure may pass without a sound, so use the phone’s built-in alarm as backup.

Moving between the camper and the outside storage at this hour can expose gear to damp night air. Keep a dry cloth near the door for wet handles, mirrors or the windscreen, and avoid placing bedding or clothing directly on dewy ground. Before leaving, open the camper briefly if conditions allow, then check that outside vents, windows and hatches are properly set for travel.

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.