Question

why is standard time so necessary why is standard time zone necessary​

Answer 1

Answer:

The expansion of transport and communication during the 19th century created a need for a unified time-keeping system, and time zones were introduced. Time zones have a long history. Before clocks were invented, people kept time using different instruments to observe the Sun's meridian passing at noon.

Explanation:

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Answer 2

Answer:

As distribution of light on the earth surface is not same due inclination of it's axis. Sunlight takes 4mins to cross each longitude. Only half part of earth faces light side and other part towards dark. So Time zones are important to avoid confusion and to know accurate time of different places

Explanation:

We have 360 longitudes..As sunlight takes 4 mins to cross each longitude therefore there are 24 time zones..The width of each time zone 15degrees, which means the time difference b/w each time zone is 1hr.(15*4mins=60mins).

when you travel towards west you loose time of 4 mins as you cross every longitude..

when travel towards East you gain time of 4 mins as you cross every longitude