Kitchens here serve late, and a table booked at an hour that would be closing time elsewhere is entirely normal. If 11:49 pm is when you are expected, the countdown gives the exact wait rather than the guess that has everyone standing outside twenty minutes early or arriving fifteen minutes after the rest.
Accuracy comes from the device rather than from the page, so a machine whose clock has drifted will produce a countdown that drifts with it. Most phones and laptops sync automatically over the network and stay within a second, but it is worth a glance if the figure ever looks wrong.
Plenty of phones and dashboards default to a 24-hour display regardless of how people around them actually speak, so 23:49 may well be the figure staring back at you while 11:49 pm is what anyone would say out loud. Neither form is more correct; they are just aimed at different readers.
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 23:49 on a 12-hour clock?
The same instant is 11:49 pm in writing and eleven minutes to twelve at night 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 11:49 pm, not a figure worked out when the page first opened.
What happens once 11:49 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.