Bath, books, bed: the evening routine with younger children runs on a schedule that only works if it starts on time. Knowing exactly how long is left before 7:06 pm is genuinely more useful mid-routine than trying to read a clock with wet hands. The figure here updates on its own, second by second.
Coming back to this page in an hour, tomorrow or next month shows exactly the same thing: however long is genuinely left until 7:06 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.
Matching what somebody said against what somebody wrote is easier with all three versions to hand: 7:06 pm for everyday reading, 19:06 for anything printed in railway style, and six minutes past seven in the evening for whatever was actually spoken down the phone. All three describe precisely the same point in the day, and having them side by side saves a good deal of squinting at a timetable.
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 19:06 in the 12-hour clock?
That is 7:06 pm, or six minutes 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.
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 7:06 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.