Sir Sandford Fleming was one of Canada's greatest inventors and engineers. He helped to plan our earliest railroads, designed our first postage stamp and co-founded the Royal Canadian Institute to promote Canadian science. In the 1870s, he proposed a new system for the world's time: a universal 24-hour clock divided into local time zones. It would become the standard for measuring time all over the world. You can read more about Sir Sandford Fleming on Wikipedia here.