Set the alarm clock for 4:07 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 4:05 am Alarm clock for 4:06 am Alarm clock for 4:08 am Alarm clock for 4:09 am

Going to bed for a 4:07 am alarm

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

4:07 am across the country

Sydney	4:07 am
Brisbane	4:07 am
Adelaide	3:37 am
Perth	2:07 am
Darwin	3:37 am

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

Online alarm clock for 4:07 am

You’re wrapping up and heading off, ready to leave Sydney for Canberra while the highway is still quiet. An alarm set for 4:07 am gives you a clear departure cue instead of letting one last task stretch towards 5:00 am. It suits the moment when the bags are packed, the keys are handy and you only need a firm signal to get moving.

Your Sydney–Canberra drive depends on the browser remaining active after you set the alarm. If you close the page or browser, or the device goes to sleep, the 4:07 am alarm will not sound and your planned departure may slip. Leave the alarm running on a powered device that will stay awake, with the volume high enough to hear from where you are finishing up. A quick sound check can confirm that the alert is audible before you step away.

Before setting out at this hour, consider how the temperature will change between the dark Sydney streets and the later approach to Canberra. The cabin may feel cool at 4:07 am, so an aggressive air-conditioning setting can become uncomfortable during the quiet stretch of highway. Set a moderate cabin temperature before leaving and keep a light layer within reach rather than stopping to search through luggage. This also leaves the controls settled while you concentrate on the road.

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.