Set the alarm clock for 10:18 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 10:16 am Alarm clock for 10:17 am Alarm clock for 10:19 am Alarm clock for 10:20 am

Going to bed for a 10:18 am alarm

Asleep by 1:03 am — 6 full sleep cycles, about 9 hours
Asleep by 2:33 am — 5 full sleep cycles, about 7 hours
Asleep by 4:03 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.

10:18 am across the country

London	10:18 am
Birmingham	10:18 am
Manchester	10:18 am
Glasgow	10:18 am
Belfast	10:18 am

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

How to use the online alarm clock

While you watch the clock for the moment to take garden waste to the council recycling centre, an alarm set for 10:18 am keeps the planned departure from slipping. There are 42 minutes before 11:00 am, enough time to check that the bags or containers are secure without losing sight of when you meant to leave.

Your garden-waste departure depends on hearing the alert, so the phone’s sound setting matters as much as the time shown on screen. Silent mode or a low media volume can leave a browser alarm inaudible even when it activates correctly; a brief test beforehand reveals what the alert will actually sound like. Closing the page or allowing the phone to sleep means the alarm cannot sound for the garden waste trip, so it should not be the only reminder for a departure that cannot drift.

Loading garden waste can take you between indoor shade, a bright doorway and the car, making the display harder to read in changing morning light. Before settling down to wait, place the phone where daylight will not reflect directly across the screen and raise its brightness enough to see 10:18 am at a glance. Keeping it in the same visible spot also avoids a last-minute search when the alarm time arrives.

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 10:18 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.