Set the alarm clock for 9:40 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 9:40 am alarm

  • Asleep by 12:25 am — 6 full sleep cycles, about 9 hours
  • Asleep by 1:55 am — 5 full sleep cycles, about 7 hours
  • Asleep by 3:25 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.

9:40 am across the country

London9:40 am
Birmingham9:40 am
Manchester9:40 am
Glasgow9:40 am
Belfast9:40 am

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

How to use the online alarm clock

Preparing for an office evacuation drill before it begins is easier when 9:40 am marks the point to gather your pass, check the planned route and finish any immediate desk task. The alert creates a clear boundary before colleagues start moving, while the remaining time before 10:00 am leaves room to reach the assembly instructions without a last-minute rush.

An evacuation drill needs a signal that suits the office around you. A gentle tone may be enough in a quiet room, but a more persistent sound makes sense if conversations, printers or headphones could mask it. Check the volume once beforehand and keep the alarm visible while you work. If you close this page or allow your phone or laptop to sleep, the office evacuation drill alert will not sound, so use a separate alarm when missing the signal would disrupt your preparation.

Getting ready to leave the floor at 9:40 am can make a full breakfast or a fresh mug of tea awkward to manage. Something small that can be finished beforehand is less likely to be abandoned on a desk, and a little water is practical before standing outside at the assembly point. A hot drink or larger snack can wait until the morning drill is over and everyone has returned.

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.