Set the alarm clock for 5:37 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 5:37 am alarm

  • Asleep by 8:22 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 9:52 pm — 5 full sleep cycles, about 7 hours
  • Asleep by 11:22 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.

5:37 am across the country

Sydney5:37 am
Brisbane5:37 am
Adelaide5:07 am
Perth3:37 am
Darwin5:07 am

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

Online alarm clock for 5:37 am

You’re just waking at 5:37 am, with the Brisbane ferry crossing shift still ahead and nothing started yet. Set the alarm for this time if you need a clear cue to sit up, get dressed and gather what you need before heading out. The 23 minutes before 6:00 am leave a useful buffer for moving from bed to departure without treating the round hour as your actual starting point.

Because your ferry shift begins before the household is fully awake, check the sound setting while you are setting the alarm. Silent mode can suppress or soften the alert, so raise the alarm volume and play the preview once at the level you expect to hear from bed. Keep the browser running and the phone awake: your ferry shift will not get its alert from a closed page or a sleeping phone. If you rely on headphones overnight, confirm whether the sound will play through them or through the phone speaker.

Stepping outside before a Brisbane dawn can feel different from the room you have just left, especially when the air is humid. Put your work clothes and any light outer layer where you can reach them after the 5:37 am alarm, then allow a moment at the door to judge the outdoor air before leaving. That small pause helps you choose what to carry for the trip to the ferry crossing without using up the whole buffer before 6:00 am.

Common questions

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.

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.