time+zones+mam

=﻿Time Zones= Standard time in time zones was instituted in the U.S. and Canada by the railroads on November 18, 1883. Before that, time of day was a local matter, and most cities and towns used some form of local solar time, maintained by a well-known clock (on a church steeple, for example, or in a jeweler's window). Not everybody immediately used the new time system. Although the large railway systems in U.S. and Canada used the standard time at noon on November 18, 1883, it was many years before the time was actually used by the people themselves.