@dalehileman,
Have to know when to be at the gate to catch your flight, and
on organized tours, it's important to know when the bus is going to leave.
Just remembered: many decades ago on a tour in Europe, I didn't have a watch, and when I returned to the meeting place for our bus, it was not there.
That's the first and last time I was ever late.
They went around the block to scare me, and it worked.