Set the alarm clock for 5:15 am

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

The alarm goes off in: ::

You can also try the other alarm clocks

Alarm clock for 5:13 am Alarm clock for 5:14 am Alarm clock for 5:16 am Alarm clock for 5:17 am

Going to bed for a 5:15 am alarm

Asleep by 8:00 pm — 6 full sleep cycles, about 9 hours
Asleep by 9:30 pm — 5 full sleep cycles, about 7 hours
Asleep by 11:00 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.

5:15 am across the country

Sydney	5:15 am
Brisbane	5:15 am
Adelaide	4:45 am
Perth	3:15 am
Darwin	4:45 am

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

Online alarm clock for 5:15 am

Pause the last of your packing when the 5:15 am alarm sounds, then shift your attention from what is in your hands to getting the car out before the morning traffic builds. Leaving soon gives you a useful head start on commuters heading into Australian city centres. If you are still organising bags or checking the house, use 6:00 am as a firm reference point rather than letting the departure drift towards the busier hour.

Set the alarm where you can hear it over the kettle, shower, radio or luggage being moved near the door. Choose a strong volume, test it briefly, and keep the phone close enough that background noise will not bury the signal. The alarm must remain running on an awake phone; otherwise it cannot interrupt your preparations for the drive into the city. A separate phone alarm is sensible if missing the signal would leave you departing later than planned.

Before pulling out at this early hour, check the route you expect to take and allow for roadworks, overnight lane closures or trucks using major roads. Traffic may be light at 5:15 am, but a closed ramp can still change the journey considerably. Put the destination into navigation before departure so the estimated travel time is ready, and leave a small buffer for fuel, parking or an unfamiliar turn.

Common questions

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.

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.