Overnight travel puts departures at hours nobody would choose, and a coach or a check-in at 10:54 pm is not moved by how inconvenient it is. This page counts down to that time exactly, so the last hour before leaving can be spent packing rather than doing arithmetic.
Coming back to this page in an hour, tomorrow or next month shows exactly the same thing: however long is genuinely left until 10:54 pm next comes round. There is no session to lose and nothing to configure again, because the number is worked out fresh each time from the clock on your device.
Rail and bus timetables across Britain are printed in 24-hour time, which is why 22:54 is the version that matters when checking a departure against a board or a printed sheet. This page shows 10:54 pm for everyday reading and 22:54 alongside it, so the two can be matched without any mental arithmetic.
Common questions
What happens if 10:54 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.
Which clock does it use?
Your own. It reads the local time and time zone from the device you are looking at, so the figure reflects where you actually are rather than a fixed zone written into the page.
Will this alert me when the time arrives?
No. It is a live number rather than an alarm — nothing rings, buzzes or notifies you at zero. If you need to be interrupted at 10:54 pm, set an alarm as well and treat this page as the running total.
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.