How to use the online alarm clock
An alarm at 8:20 pm in the evening is often the last nudge before something starts: a call, a class, a shift, a show you don't want to miss the start of. Set the time, choose a sound, and leave the tab open. It'll ring right on 8:20 pm.
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.
Some people use this alongside a phone alarm rather than instead of it: a louder backup through laptop speakers, or a way to set a reminder without touching a phone at all. It won't survive the tab closing or the device sleeping, so for anything critical overnight, keep a second alarm running as well. On a 24-hour clock 8:20 pm is written 20:20, and spoken aloud it's twenty past eight in the evening. You'll also see it written 8.20 pm — a full stop instead of the colon means the same time. Set an alarm for 8:20 pm, set the alarm to 8:20 pm, set my alarm for 8:20 pm — all of it lands on this page and does the same thing.
Common questions
Will the alarm still ring if I close the browser tab?
No. The alarm only runs while this tab stays open — closing it, or closing the browser entirely, stops the countdown before it can ring. Keep the tab open in the background if you need it to go off later.
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.
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