What will be the time at 70° E longitude when it is noon at Greenwich?
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Answer: 5 am
Explanation:
Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London and it is always counted from midnight.
The calculation is always done as follows : - It is 4minutes/ degree while coming towards East, if it is + means then you are suppose to add when going towards West, it is minus.
Each degree longitude will makes a difference of 4 minutes (while leading towards east and lagging towards west).
70 DEGREES CORRESPOND TO 70*4 = 280 min (i.e) 5 hrs
TIME AT 70 DEGREES EAST OF GREENWHICH THEN 12 + 5 = 5 A.M
Hence, the time would be 5 am.
Hope it helps!
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