Set the alarm clock for 4:15 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 4:13 am Alarm clock for 4:14 am Alarm clock for 4:16 am Alarm clock for 4:17 am

Going to bed for a 4:15 am alarm

Asleep by 7:00 pm — 6 full sleep cycles, about 9 hours
Asleep by 8:30 pm — 5 full sleep cycles, about 7 hours
Asleep by 10:00 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.

4:15 am across the country

Sydney	4:15 am
Brisbane	4:15 am
Adelaide	3:45 am
Perth	2:15 am
Darwin	3:45 am

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

Online alarm clock for 4:15 am

While you watch the clock and wait for the risen dough, a 4:15 am alarm marks the moment to move it from proving to the next stage. That leaves the early bakery run on schedule, with 5:00 am still ahead for shaping, loading trays or preparing the first bake. You can keep working nearby without repeatedly checking the minute hand.

Before relying on the alarm for this batch, set it briefly and confirm that the signal is loud enough to hear over mixers, exhaust fans and the hum of refrigeration. Restore the intended 4:15 am setting after that check, and leave the sound level where you tested it. Keep the browser session running and the computer awake; otherwise the alarm will not sound, and the dough could remain proving past the planned time.

During a dark bakery shift, place the screen where a quick glance is enough, rather than holding it close whenever you check 4:15 am. Lower harsh brightness while keeping the alarm controls readable, and angle the display away from shiny benches that reflect light into your eyes. Once the time is set, turn the screen aside and use the audible signal, so the room stays dim while you monitor the batch.

Common questions

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.

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.