Set the alarm clock for 3:34 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 3:32 am Alarm clock for 3:33 am Alarm clock for 3:35 am Alarm clock for 3:36 am

Going to bed for a 3:34 am alarm

Asleep by 6:19 pm — 6 full sleep cycles, about 9 hours
Asleep by 7:49 pm — 5 full sleep cycles, about 7 hours
Asleep by 9:19 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.

3:34 am across the country

Sydney	3:34 am
Brisbane	3:34 am
Adelaide	3:04 am
Perth	1:34 am
Darwin	3:04 am

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

Online alarm clock for 3:34 am

Break off from checking your bag when the 3:34 am alarm sounds: a domestic flight north can leave little room for getting sidetracked. Use the alert as the point to zip up, collect your ID and move to the next part of the trip. With 4:00 am approaching, there is still time to check the essentials without turning the departure into a last-minute scramble.

Your headphones may still be connected after music, a podcast or an earlier call, quietly taking the alarm sound away from the room. Before relying on this alert for the flight, disconnect them or confirm that the sound comes through the phone speaker at a level you can hear. Keep a separate alarm for the flight as well, since this browser alert can remain silent if its page is closed or the phone goes to sleep.

Getting ready for a northbound departure can sound deceptively calm at home, while airport noise is already building around early check-in areas. At 3:34 am, place the phone within sight as well as earshot, so the screen change can catch your attention if luggage wheels, announcements or a rideshare arriving outside mask the alarm. Once it sounds, silence it deliberately before leaving rather than letting it blend into the background.

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.