Set the alarm clock for 6:40 pm

 

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

The alarm goes off in: ::
 
 

6:40 pm across the country

London6:40 pm
Birmingham6:40 pm
Manchester6:40 pm
Glasgow6:40 pm
Belfast6:40 pm

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

How to use the online alarm clock

Waking at 6:40 pm, you have not yet started the job of closing the greenhouse before the evening chill arrives. Set the alarm for this time, then give yourself a moment to get properly awake, pull on suitable shoes and find the keys or torch you need. With 7:00 pm approaching, the alert can mark the point when resting ends and the short outdoor task begins.

Because the greenhouse job depends on hearing the alert, keep this browser page open until 6:40 pm and leave the computer or phone awake with its sound turned up. Closing the browser beforehand means the greenhouse alarm will not ring, so it should not be treated like a clock alarm that continues independently. A quick sound check can also reveal muted audio before you settle down.

Heading outside in the late afternoon may mean moving between a brighter room and a dim garden. Rather than staring at a glowing screen while your eyes adjust, note the route to the greenhouse first and lower the display brightness if it feels harsh. Keep the torch within reach for the latch and path, then put the screen away once the alarm has done its job.

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.