Every morning for years, at about 11:30am, the telephone operator in a small Sierra-Nevada town received a call from a man asking the exact time. One day the operator got up the nerve to ask him why the regularity.
"I'm foreman of the local sawmill," he explained. "Every day I have to blow the whistle at noon, so I call you to get the exact time."
The operator giggled, "That's really funny," she said. "All this time we've been setting our clock by your whistle.