Set the alarm clock for 3:38 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 3:38 am alarm

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

3:38 am across the country

Sydney3:38 am
Brisbane3:38 am
Adelaide3:08 am
Perth1:38 am
Darwin3:08 am

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

Online alarm clock for 3:38 am

You’re getting ready early to open the cattle-yard gates before the stock move begins, so a 3:38 am alarm leaves time to pull on your boots, find the torch and check the latches. The early start also gives you a useful margin before 4:00 am, when the rest of the morning’s work may begin around the property.

Because the yard needs to be accessible at the right moment, the alarm should remain on a phone or computer that will stay awake until it sounds. A browser alarm cannot alert you after its page has been closed or the machine has gone to sleep, which could leave the cattle-yard gate shut when the drove is ready. Keeping the alarm page visible and connecting the device to power reduces that risk.

While preparing for the gates in the dark, keep the screen dim enough that it does not overwhelm the surrounding view. A warmer display setting can make the phone less glaring at 3:38 am, while placing the torch beside your boots means you will not need the screen for lighting. Once outside, allow a moment before checking latches or walking across uneven ground, especially when moving between the bright display and the unlit yard.

Common questions

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.

Is this alarm accurate across daylight saving time?

It uses your device's local clock, so as long as your computer's time and date settings are correct, it'll adjust automatically when daylight saving time starts or ends.

Can I use this on my phone instead of a laptop?

Yes, it works in a mobile browser the same way, but phones are more likely to lock the screen or sleep, which can stop the alarm from ringing. A laptop or desktop tends to be more reliable for this.