Online alarm clock for 11:51 pm
You are midway through a task when the security shift is due to start, so an alarm for 11:51 pm gives you a clear signal to stop and move to the handover. There are nine minutes until 12:00 am, enough time to finish the immediate job, gather the keys or radio, and pass on anything the incoming guard needs to know.
While you complete that work, the alarm page can remain behind another browser tab, letting you keep a roster, site log or message open in front. Avoid closing the alarm page while switching between them, and check that browser audio is allowed. If the browser session ends or the phone goes to sleep, the security shift will have no alarm sound to pull you away from the task.
Because this handover falls late in the evening, leave a small buffer before whatever comes next that night. Set out anything needed for the next duty before 11:51 pm, then use the alarm as the point for changing tasks rather than the moment to start packing up. That keeps the short run to midnight available for a calm handover and prevents the following commitment from beginning with a scramble.
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.
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