Departures at this hour are not moved by how inconvenient they are, and check-in closes on the printed minute. If 10:13 pm is when you have to be standing at the desk, or when the driver is due downstairs, the countdown here gives the exact wait so the last hour can be spent packing rather than calculating.
There is nothing to start and nothing to choose. The page reads the clock on your device, works out the gap to 10:13 pm, and redraws it every second for as long as it is open. Leave it in a background tab if you like; the number will be current whenever you look back at it.
In an office where a dozen nationalities read the same calendar invite, 24-hour notation quietly does a lot of work. 22:13 cannot be misread as the other end of the day, whereas 10:13 pm depends on the reader noticing two small letters at the end of it. Both describe exactly the same moment.
Common questions
Will it alert me when 10:13 pm arrives?
No. This is a live figure rather than an alarm — nothing sounds, vibrates or notifies at zero. If you need interrupting at 10:13 pm, set an alarm alongside it and use this page as the running total.
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 22:13 on a 12-hour clock?
The same instant is 10:13 pm in writing and thirteen minutes past ten 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 10:13 pm, not a figure worked out when the page first opened.