Question

the local time at Greenwich is considered to be international standard time

Answer 1

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Answer 2

(1) The International standard time has been decided according to 0° longitude.

(2) 0° longitude passes through Greenwich, England.

(3) For an international co-ordination, it is essential to bring compatibility between the standard time of various countries in the world. For this purpose, the local time at Greenwich is considered to be the International standard time.