After-school clubs, swimming lessons and training all start at a set time, and the moment that actually matters is when you need to be in the car rather than when the session begins. Set that as 3:11 pm and this page will track the exact wait, right down to the second.
The figure on this page comes from your own device's clock, checked continuously and recalculated every second against 3:11 pm. There is nothing to press and nothing to set up first — the count is already running by the time the page has finished loading, and it keeps going while you are looking at it.
British speech has a well-worn habit of dropping the middle out of a time: half seven means half an hour after seven, never half an hour before it. Quarter past and quarter to work the same way. Written down, the same moment appears plainly as 3:11 pm, or as 15:11 where no ambiguity is allowed.
Common questions
Is it affected by the clocks changing?
Only in the sense that your device is. When the change between GMT and BST happens at the end of March and October, the device adjusts and the countdown follows it without anything to do here.
What is 15:11 in the 12-hour clock?
That is 3:11 pm, or eleven minutes past three in the afternoon if you are saying it aloud. From 13:00 onwards, subtracting twelve gives the pm figure — the same moment written three different ways.
Does the number update by itself?
Yes. It recalculates every second from your device's clock, so there is nothing to refresh or restart. Whatever is on screen is the current gap to the target time, not a figure worked out when the page first loaded.
What happens if 3:11 pm has already gone for today?
The count simply carries on towards the next occurrence, which is tomorrow. That rollover happens on its own — the page does not need reloading and there is nothing to reset by hand.