Enter my fantasy:
You have just discovered a time-machine, you have to make a choice.
You have to choose a YEAR. What year? In to the past, what event would you like to witness? Into the future? What date? Where in the world?
The first thing that popped into my head was Friday February 7th 1964.
B-Day, the Beatles arrive for the first time in U.S. at John F. Kennedy Airport. (I was at that actual time, only 19 months old.)
How about you?