Bath, story, bed: the routine with younger children only works if it starts when it is supposed to. Halfway through, with wet hands and a child who has found a second wind, the gap left before 7:45 pm is more useful than the time itself. The figure redraws itself once a second without being asked.
This is a display rather than an alarm. Nothing rings, buzzes or notifies at the end, and the page will not interrupt whatever else you are doing. If being interrupted is the point, set an alarm as well and treat this page as the running total you can glance at in the meantime.
In an office where a dozen nationalities read the same calendar invite, 24-hour notation quietly does a lot of work. 19:45 cannot be misread as the other end of the day, whereas 7:45 pm depends on the reader noticing two small letters at the end of it. Both describe exactly the same moment.
Common questions
Do the clocks change here?
No. The UAE has no daylight saving at all, so the offset stays at UTC+4 in every month. When the gap to Europe or North America shifts, it is their clocks that moved, not yours.
What is 19:45 on a 12-hour clock?
The same instant is 7:45 pm in writing and quarter to eight in the evening out loud. Anything from 13:00 onwards loses twelve to give the pm figure, which is the only sum involved in moving between the two.
Does the number update by itself?
Yes. It is recalculated every second from your device's clock, so nothing needs refreshing or restarting. Whatever is on screen is the current gap to 7:45 pm, not a figure worked out when the page first opened.
What happens once 7:45 pm has passed for today?
The count rolls over and carries on towards the same time tomorrow. That happens on its own at the moment the time passes — the page does not need reloading and there is nothing to reset by hand.