Night shifts commonly start somewhere in this stretch, well after the rest of the house has settled for the evening. If 7:05 pm is clock-on time, the last hour before it tends to drag more than the shift itself. A live countdown at least keeps that hour honest, tracking the exact time left.
Coming back to this page in an hour, tomorrow or next month shows exactly the same thing: however long is genuinely left until 7:05 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 19:05 is the version that matters when checking a departure against a board or a printed sheet. This page shows 7:05 pm for everyday reading and 19:05 alongside it, so the two can be matched without any mental arithmetic.
Common questions
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 7:05 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.
What is 19:05 in the 12-hour clock?
That is 7:05 pm, or five past seven in the evening if you are saying it aloud. From 13:00 onwards, subtracting twelve gives the pm figure — the same moment written three different ways.