The United States starts its day as your evening gets going, which puts a good number of calls at this end of the clock. Their side moves twice a year and yours does not, so the offset you memorised in winter is wrong by summer. This page simply counts down to 6:23 pm as your own device reckons it.
If 6:23 pm has already gone today, the count simply carries on towards tomorrow's occurrence. That rollover happens by itself at the moment the time passes, with nothing to reset and no need to reload, so a page left open overnight is still showing something useful in the morning.
The Emirates keep Gulf Standard Time, UTC+4, and never move the clocks. Everything about time here follows from that: 6:23 pm in January is the same 6:23 pm in July, and the gap to London or Berlin changes twice a year because of what they do, not because of anything happening at this end.
Common questions
What is 18:23 on a 12-hour clock?
The same instant is 6:23 pm in writing and twenty-three minutes past six 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 6:23 pm, not a figure worked out when the page first opened.
What happens once 6:23 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.
Which clock does the countdown use?
Your own. It reads the local time and time zone from the device in front of you, which in the Emirates means Gulf Standard Time, UTC+4. Travel and the count follows whatever the device picks up.