How to use the online alarm clock
You’re clocking off after the late shift at a 24-hour supermarket, with the last checks finished and your coat already within reach. An alarm for 12:36 am can mark the point to leave rather than drifting into another small job before heading home. It also gives you a clear boundary before 1:00 am, when tired minutes can easily blur together.
Your chosen sound should suit the part of the supermarket where you will be at 12:36 am. A gentle tone may be enough in a quiet staff room, while a more persistent sound is easier to notice near refrigeration units, cleaning equipment or closing tasks. The volume needs to be audible without startling colleagues nearby. Because the alarm relies on the browser remaining active, it cannot signal the end of your supermarket shift if the browser stops running while your phone is resting.
Arriving home during the night can make a loud reminder awkward for anyone already asleep. Keeping the phone close, lowering the volume after leaving work and using vibration alongside a restrained tone can reduce the disturbance. Keys and anything needed for the journey home can be gathered before 12:36 am, so the alert marks a quiet departure instead of starting a noisy search through pockets or a work bag.
Common questions
Do I need an account or an app?
Neither. Choose a time and a sound, press Start, and it runs in this browser tab. Nothing is downloaded, nothing is registered, and closing the page leaves nothing behind on the device.
Can I change the sound?
Yes, there is a short list of tones to pick from before you press Start. Softer sounds are easy to sleep through, so a firmer bell tends to be the safer choice for anything early in the morning.
Will it still be right when the clocks change?
Yes. It reads your device's local clock, so the move between GMT and BST at the end of March and October is picked up automatically, as long as the computer's date, time and time zone are set correctly.
Can I use this on a phone?
It works in a mobile browser, but phones lock the screen and suspend background tabs far more readily than a laptop does, which can stop the alarm sounding. For anything important, a desktop or a plugged-in laptop is the steadier option.
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