Question

why is the standard time considered necessary​

Answer 1

Answer:

Standard time in time zones was instituted in the U.S. and Canada by the railroads on November 18, 1883. Prior to 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).

Answer 2

Answer:

Explanation:To avoid the confusion of time from place to place 82 degree 30minutes East longitude is taken as standard meridian of india and serves as Indian standard time.Thus all people in india have to follow this time .Thus block show same time