How to use the online alarm clock
A short afternoon nap before an evening shift only helps if you actually get up again, which is where an alarm for 5:48 pm earns its keep. This rings through your browser at 5:48 pm, so a laptop on the couch arm can do the waking for you.
Pick whichever sound you're most likely to actually notice, then press Start. The alarm is tied to this browser tab, so it needs to stay open. Minimising the window is fine, but closing the tab or the browser will stop the countdown before it ever rings.
Compared to a phone, this alarm has one job and nothing else competing for attention — no messages, no app switching. It's free and doesn't ask for sign-up, but it only works while the tab is open and the device stays awake, so it suits daytime use at a desk better than an overnight bedroom alarm. On a 24-hour clock 5:48 pm is written 17:48, and spoken aloud it's twelve minutes to six in the evening. You'll also see it written 5.48 pm — a full stop instead of the colon means the same time. Set an alarm for 5:48 pm, set the alarm to 5:48 pm, set my alarm for 5:48 pm — all of it lands on this page and does the same thing.
Common questions
Can I change the alarm sound?
Yes, there's a short list of tones to choose from before you press Start. Pick whichever one you're most likely to actually hear — softer sounds are easier to sleep through than a firm chime or bell.
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.