Counters and branches that close in the late afternoon give no leeway at all, and arriving two minutes late means coming back tomorrow. This page counts down to 3:45 pm precisely, which makes it much easier to judge honestly whether there is enough time left to get there and back.
Coming back to this page in an hour, tomorrow or next month shows exactly the same thing: however long is genuinely left until 3:45 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: 3:45 pm for everyday reading, 15:45 for anything printed in railway style, and quarter to four in the afternoon 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
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 3:45 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 15:45 in the 12-hour clock?
That is 3:45 pm, or quarter to four 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.
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