Set the alarm clock for 6:39 pm

 

Leave this tab open — the alarm only rings while the tab stays open.

The alarm goes off in: ::
 
 

6:39 pm across the country

Sydney6:39 pm
Brisbane6:39 pm
Adelaide6:09 pm
Perth4:39 pm
Darwin6:09 pm

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

How to use the online alarm clock

Night shift usually means getting moving well before most people are winding down, and an alarm for 6:39 pm in the evening covers that changeover. This rings from your browser at 6:39 pm, loud enough to notice over dinner or the television.

After picking a tone, press Start and leave the page open. It doesn't need an internet connection once it's running, but it does need the tab itself to stay open, so avoid closing the browser or letting the device fall asleep before the time is reached.

The advantage of a browser alarm is volume and reliability at a desk: laptop speakers are often louder and easier to hear across a room than a phone left in a bag. The catch is that it depends entirely on the tab staying open; if the browser closes or the laptop sleeps, the alarm won't fire. On a 24-hour clock 6:39 pm is written 18:39, and spoken aloud it's twenty-one minutes to seven in the evening. Timetables and rosters may show it as 18:39, and handwritten notes as 6.39 pm. Whether you would say set alarm for 6:39 pm or put an alarm on for 6:39 pm, the steps are the same: pick a sound, press Start, leave the tab open.

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.