A tour bus load full of noisy tourists arrives at Runnymede, England.

They gather around the guide who says, "This is the spot where the barons forced King John to sign the Magna Carta."

A man pushing his way to the front of the crowd asks, "When did that happen?"

"1215," answers the guide.

The man looks at his watch and says, "Shoot! Just missed it by a half hour!"