Set the alarm clock for 6:42 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 6:42 am alarm

  • Asleep by 9:27 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 10:57 pm — 5 full sleep cycles, about 7 hours
  • Asleep by 12:27 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.

6:42 am across the country

London6:42 am
Birmingham6:42 am
Manchester6:42 am
Glasgow6:42 am
Belfast6:42 am

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

How to use the online alarm clock

While getting the Royal Mail sack ready ahead of collection, set the alarm for 6:42 am before leaving it by the usual door or gate. That gives you a clear prompt to move the sack outside, check that its label is secure and return indoors before 7:00 am, rather than relying on a hurried glance at the clock.

A reminder for the sack needs to be audible from wherever you will be waiting, especially if a kettle, radio or washing machine is running nearby. Choose a strong volume, test the sound once and keep the phone or computer within hearing distance, as background noise can easily cover a brief signal. A browser alarm cannot protect the Royal Mail sack collection after its page is closed or the machine falls asleep, so use a separate backup if missing the pickup would cause trouble.

Once the sack is prepared, a small breakfast or a slice of toast can fit into the early routine without distracting from the collection time. Keep a drink somewhere it cannot spill onto labels or paperwork, and leave anything that needs cooking or several minutes of attention until the sack is safely outside. At 6:42 am, a simple cup of tea or water is easier to pause when the alarm sounds.

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 6:42 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.