Set the alarm clock for 9:21 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 9:19 am Alarm clock for 9:20 am Alarm clock for 9:22 am Alarm clock for 9:23 am

Going to bed for a 9:21 am alarm

Asleep by 12:06 am — 6 full sleep cycles, about 9 hours
Asleep by 1:36 am — 5 full sleep cycles, about 7 hours
Asleep by 3:06 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.

9:21 am across the country

Sydney	9:21 am
Brisbane	9:21 am
Adelaide	8:51 am
Perth	7:21 am
Darwin	8:51 am

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

Online alarm clock for 9:21 am

Waking at 9:21 am, you have not yet started getting ready to meet the intercity coach at the roadside stop. Setting the alarm now gives the morning a clear starting point instead of relying on a half-awake glance at the clock. The approach of 10:00 am also leaves a useful window for dressing, checking the departure details and gathering what you need.

Because a coach pickup allows little room for a missed alert, the alarm sound deserves a quick check while you are still at home. A short test confirms that the selected tone is audible at the current volume and distinct enough to catch your attention. If the browser tab is closed or the device falls asleep, the alarm cannot sound, which could leave you late for the coach at the roadside station.

The trip out to a roadside station may feel different from the air inside your room. At 9:21 am, outdoor humidity can make a mild morning feel warmer or heavier, especially after rain or near the coast. A light, removable layer suits changing conditions, while a small bottle of water is practical if the stop has little shade and the coach is not due immediately.

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.