How to use the online alarm clock
If 11:59 pm is when you need to leave for work while everyone else is heading to bed, this tool sets a browser alarm that rings right through your speakers at 11:59 pm. No app, no account, just a tab that stays open until it fires.
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.
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 11:59 pm is written 23:59, and spoken aloud it's one minutes to twelve at night. Timetables and rosters may show it as 23:59, and handwritten notes as 11.59 pm. Set an alarm for 11:59 pm, set the alarm to 11:59 pm, set my alarm for 11:59 pm — all of it lands on this page and does the same thing.
Common questions
Is there a cost to use this?
No, it's free, with no sign-up and no limit on how many times you set it. It just needs the tab left open until the time you've chosen arrives.
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.
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