Set the alarm clock for 8:58 am

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

The alarm goes off in: ::

You can also try the other alarm clocks

Alarm clock for 8:56 am Alarm clock for 8:57 am Alarm clock for 8:59 am

Going to bed for a 8:58 am alarm

Asleep by 11:43 pm — 6 full sleep cycles, about 9 hours
Asleep by 1:13 am — 5 full sleep cycles, about 7 hours
Asleep by 2:43 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.

8:58 am across the country

London	8:58 am
Birmingham	8:58 am
Manchester	8:58 am
Glasgow	8:58 am
Belfast	8:58 am

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

How to use the online alarm clock

As your shift ends, hand over the job of moving the car from its overnight parking zone and set the alarm for 8:58 am. That gives the next person a clear prompt just before 9:00 am, when morning parking restrictions may begin. Tell them where the keys are and which nearby space to use, so the handover does not depend on a hurried explanation.

Before you leave, check where your phone is sending its sound: connected headphones can take the alarm quietly without anyone nearby noticing. Disconnect them or place them with the person taking over, then use the alarm’s preview to confirm that the alert comes from the expected speaker. The alarm remains available only while this page is open and the phone stays awake; otherwise the car move could be missed.

During an early handover, a bright screen can feel harsh beside a dim car park or entrance. Lower the display brightness before setting 8:58 am, use the phone’s warmer night setting if it is already enabled, and avoid staring at the countdown. Once the alarm is ready, put the phone face down but within hearing distance, then look towards the lit route the next driver will take.

Common questions

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 8:58 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.

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.