Each morning at about 11:30, the telephone operator in a small town received a call from a man asking the time.
One day the operator asked him why he called at the same time every day.
“I’m foreman of the local mill,” he said. “Each day I have to blow the whistle at noon, so I call you to get the time.”
“That’s funny,” the operator laughed,. “Because all this time we’ve been setting our clock by your whistle.