How to use the online alarm clock
Break away from what you are doing when the 5:02 pm alarm sounds, leaving enough time to get ready for your NHS blood donation appointment. With 6:00 pm approaching, the reminder marks a clear stopping point so the task in front of you does not absorb the rest of the afternoon.
Your NHS blood donation reminder can seem silent when its sound has quietly been routed to connected headphones. Check the audio output and volume before relying on it, especially if the headphones are in a bag or another room. Keep the alarm page active and the phone awake as well, or the donation reminder may never sound when you need to leave.
Allow for the journey rather than treating 5:02 pm as the moment to start getting ready. Late-afternoon traffic can add uncertainty to a drive, while buses may take longer as commuters begin travelling home. Check the route beforehand, include time for parking or walking from the stop, and set off with a modest buffer for the NHS venue.
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 5:02 pm?
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.
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