Set the alarm clock for 6:36 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 6:36 am alarm

  • Asleep by 9:21 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 10:51 pm — 5 full sleep cycles, about 7 hours
  • Asleep by 12:21 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.

6:36 am across the country

London6:36 am
Birmingham6:36 am
Manchester6:36 am
Glasgow6:36 am
Belfast6:36 am

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

How to use the online alarm clock

As you finish getting ready and head out at 6:36 am, the alarm can mark the moment to leave for a space in the station car park. That keeps the departure tied to the morning plan rather than to repeated clock-checking. There are 24 minutes until 7:00 am, enough for the final walk round the house, collecting keys and setting off without turning the doorway into a rush.

A station-parking reminder is only useful when it can be heard above an extractor fan, radio, shower or traffic outside. The selected volume should be checked from the room where those last few minutes will actually be spent, since a signal that sounds clear beside the phone may disappear into background noise across the house. Your station parking departure will receive no alarm after the page is closed or the phone has gone to sleep, so another active alarm is sensible if either is likely.

Once the car is parked early, the remaining morning can easily look more generous than it is. Allow a small buffer before the next commitment that day for walking from the car park, finding the correct platform and coping with a short queue at the ticket gates. Keeping that margin separate from the journey time means an unexpectedly distant space is less likely to swallow the whole advantage of leaving at 6:36 am.

Common questions

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.

Does the alarm still work if I close the tab?

No. Everything runs inside this page, so closing the tab — or quitting the browser altogether — ends the countdown there and then. Leaving it open in the background is all it asks, and switching to another tab makes no difference.

What happens if my laptop goes to sleep before 6:36 am?

The tab sleeps along with it and the alarm will not sound on time, if at all. If you are relying on it, change the power settings so the machine stays awake, or keep a phone alarm running as well.