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 3:51 pm earns its keep. This rings through your browser at 3:51 pm, so a laptop on the couch arm can do the waking for you.
Choose a sound before you press Start — something like a chime or a classic bell tends to work better than anything too gentle. Once it's running, the countdown happens right here in the browser, which means the tab needs to stay open in the background rather than being closed.
It's free to use, doesn't need an account, and works the same in any modern browser, but it's honestly not meant to replace your phone for anything you can't afford to sleep through. Keep the tab open and the device awake, and it'll ring reliably at the time you set. On a 24-hour clock 3:51 pm is written 15:51, and spoken aloud it's nine minutes to four in the afternoon. Written the Australian way that's 3.51 pm, and typed in a hurry it's often 3:51pm. Setting the alarm to 3:51 pm tomorrow morning works the same way: if the time has gone for today, the count runs through to it.
Common questions
Does the alarm work if my laptop goes to sleep?
Not reliably. If the device sleeps or the screen locks, the browser tab pauses along with it, so the alarm may not fire on time or at all. Adjust your power settings if you're relying on this over a longer stretch.
Do I need to create an account or download anything?
No, there's nothing to sign up for and nothing to install. Pick a time and a sound, press Start, and it runs entirely in this browser tab.
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.
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