Question

If it is 12 noon at Greenwich, calculate the local time of the places located on the following longitudes.
100 degree East
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Answer 1

Answer:

Find the time at Greenwich (London suburb). Currently it would be effectively 11:00 UTC, since they’re observing summer time. In the winter it would be effectively 12:00 UTC.

Find a convenient time zone at 95° W. From the map, time zones include UTC-7, UTC-6 and UTC-5. So your local time here might be 4:00, 5:00, 6:00 or 7:00.

Find a convenient time zone at 100° E. From the map, time zones include UTC+6:30, UTC+7 and UTC+8. So your local time here could be 17:30, 18:00, 18:30, 19:00 or 20:00.

Find a convenient time zone at 20° W. From the map, time zones include UTC-3 and UTC. So the time there could be 8:00, 9:00, 11:00 or 12:00.

Find a convenient time zone at 12° E. From the map, time zones include UTC+1 and UTC+2. So your local time could be 12:00, 13:00 or 14:00.