Period Of Time jokes

To become a licensed airline pilot requires 1,500 hours (two years) of training. But it only takes 10 seconds to steal the pilot’s jacket and hat.

People say that life is short.

I say... life is the longest thing we ever do.

Russian history in 5 words: "And then things got worse."

6:30 is the best time on a clock... hands down.

Astronomers got tired of watching the moon rotate around the earth for 24 hours, so they just called it a "day".