Getting the metro is really a question of leaving the building at the right minute, since the walk to the station is the part that varies from one day to the next. This page counts down to 10:31 am exactly — the moment to head out, the moment to tap in, or the moment something starts at the other end.
Nothing here is stored, sent or remembered. The page works out one number from your device's clock and draws it, and that is the whole of what it does. Closing the tab leaves nothing behind, and there is no history of times you have looked up sitting anywhere afterwards.
Having all three forms in front of you saves a good deal of squinting: 10:31 am for everyday reading, 10:31 for anything printed in timetable style, and twenty-nine minutes to eleven in the morning for whatever was actually said down the phone. They are three ways of writing one instant, and mixing them up is easier than it sounds.
Common questions
What is 10:31 on a 12-hour clock?
The same instant is 10:31 am in writing and twenty-nine minutes to eleven in the morning 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 10:31 am, not a figure worked out when the page first opened.
What happens once 10:31 am 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.