Set the alarm clock for 9:59 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 9:57 am Alarm clock for 9:58 am

Going to bed for a 9:59 am alarm

Asleep by 12:44 am — 6 full sleep cycles, about 9 hours
Asleep by 2:14 am — 5 full sleep cycles, about 7 hours
Asleep by 3:44 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.

9:59 am across the country

London	9:59 am
Birmingham	9:59 am
Manchester	9:59 am
Glasgow	9:59 am
Belfast	9:59 am

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

How to use the online alarm clock

Pause what you are doing and set the alarm for 9:59 am, so you can break away and return your books to the mobile library. With its stop likely approaching at 10:00 am, this reminder marks the moment to put down the task in front of you, collect every borrowed title and head outside without losing track of the hour.

While you finish that task, the alarm page can remain behind whatever you are currently viewing in the same browser. Background pages may be slowed or silenced by browser settings, so check that sound is permitted and keep the session running. Ending the browser session or letting the handset sleep can prevent the alarm from sounding, which could leave the mobile library books sitting by the door after the van has moved on.

Before leaving on a late-morning library errand, a quick drink of water or tea is easier to fit in than a full snack. Keep the books together while you drink, rather than setting them down in another room. If breakfast was recent, leave anything more substantial until after the 9:59 am reminder and the return are complete; that avoids turning a one-minute departure into a longer kitchen stop.

Common questions

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 9:59 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.

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.