Set the alarm clock for 9:12 am

 

Leave this tab open — the alarm only rings while the tab stays open.

The alarm goes off in: ::
 
 

Going to bed for a 9:12 am alarm

  • Asleep by 11:57 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 1:27 am — 5 full sleep cycles, about 7 hours
  • Asleep by 2:57 am — 4 full sleep cycles, about 6 hours

A sleep cycle runs about 90 minutes, and most people take around 15 minutes to drop off. Waking at the end of a cycle feels easier than waking in the middle of one.

9:12 am across the country

London9:12 am
Birmingham9:12 am
Manchester9:12 am
Glasgow9:12 am
Belfast9:12 am

Times are worked out live in your browser, so daylight saving is already accounted for.

How to use the online alarm clock

You have finished your NHS interview and are leaving at 9:12 am, perhaps checking your notes one last time before stepping out of reception. An alarm at that exact moment can mark a clean finish, so you can gather your documents, put your phone away and head for the bus without watching the clock. It also leaves a useful stretch of the morning before 10:00 am.

Your NHS interview is too specific an occasion for the first sound check to happen when the alert is already due. A short test beforehand confirms that the chosen signal is audible above nearby conversation and that the volume is suitable. The browser alarm also needs the page to remain open and the phone or laptop to stay awake; otherwise it cannot sound, and the end of your interview may pass without the reminder you expected.

After leaving an interview at 9:12 am, any sleep planned for later that morning can easily drift into the rest of the day. Setting a separate wake-up time before lying down gives that remaining sleep a clear boundary. Curtains drawn against daylight and the phone placed within hearing distance can make the alarm easier to notice without keeping it beside your pillow.

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.