Set the alarm clock for 9:43 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 9:41 am Alarm clock for 9:42 am Alarm clock for 9:44 am Alarm clock for 9:45 am

Going to bed for a 9:43 am alarm

Asleep by 12:28 am — 6 full sleep cycles, about 9 hours
Asleep by 1:58 am — 5 full sleep cycles, about 7 hours
Asleep by 3:28 am — 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.

9:43 am across the country

Sydney	9:43 am
Brisbane	9:43 am
Adelaide	9:13 am
Perth	7:43 am
Darwin	9:13 am

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

Online alarm clock for 9:43 am

Finish packing the emergency kit, grab the keys and be ready to leave when the 9:43 am alarm sounds. For a crew heading to an urgent call-out, it creates a clear departure point without waiting around until 10:00 am. That leaves enough time to confirm the address, shut the depot and get everyone into the ute.

A running engine, workshop tools or radio chatter can easily drown out a quiet signal during final preparations. Set the phone near the person responsible for departure, raise the media volume and test that the tone can be heard above the surrounding noise. This browser alarm remains reliable only while the page stays open and the phone stays awake; otherwise the emergency call-out may leave without its timed cue. A separate phone alarm is a sensible backup when the crew cannot keep the browser active.

Once the crew has left at this point in the morning, avoid treating any remaining sleep as an unlimited extension of the night. If another team member is resting after an overnight shift, write down when they must be available and set a separate wake-up time before lying down. Closing the blinds and silencing non-urgent notifications can help protect that defined rest period without missing the next duty.

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.