Set the alarm clock for 5:18 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 5:18 am alarm

  • Asleep by 8:03 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 9:33 pm — 5 full sleep cycles, about 7 hours
  • Asleep by 11:03 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.

5:18 am across the country

Sydney5:18 am
Brisbane5:18 am
Adelaide4:48 am
Perth3:18 am
Darwin4:48 am

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

Online alarm clock for 5:18 am

While you’re checking labels and shifting tuna crates at Fremantle’s morning auction, a 5:18 am alarm gives you a firm cue to break away from the work in front of you. It can mark the point to finish the current crate, note anything unresolved and move to your next responsibility before 6:00 am.

Your alarm may seem quiet even when the volume is up if its sound has been routed to headphones you are no longer wearing. Check the audio destination before returning to the tuna auction floor, then use the preview sound if one is available. Because this browser alarm cannot sound after its page is closed or your phone has gone to sleep, it should not be your only signal for leaving the tuna crates; keep the page active and set a separate backup when timing matters.

Before a 5:18 am break from auction duties, water and a small, familiar snack are practical choices that can be handled without turning the pause into a long meal. Leave anything messy, hot or time-consuming until the immediate handover is finished. Keeping a drink and simple food together also means you can use the early-morning pause without searching through your bag while the wharf is already active.

Common questions

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.

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.