Question

How to calculate time by using longitudinal values steps

Answer 1

Every gain or loss of 1° longitude stands for 4 minutes.

360°= 24 hours = 1440 min

360° implies one complete rotation of earth.

1° = 1440 min ÷ 360° = 4 min

now,

on every longitudinal degree increase towards east of prime meridean(i.e 0°), add 4 min and

on every longitudinal degree increase towards west, substract 4 min.After the hours is calculated add(if east) or substract( if west) it with time of GMT. example is mentioned below.

prime meridean is our world’s relative standard time calculator.Also known as GMT, Greenwich meridean time.

example.

mirzapur of india is at 82.5° East from prime meridean(GMT).

To calculate time

multiply 82.5 with 4 i.e 330 minutes.divide 330 min with 60 min i.e 5.5 hours.whatever time would be in greenwich,U.K, add 5.5 hours with that.

simple!

longitude passing through Mirzapur is India’s STD (standard time zone).

same has to done in case if the position is on west of GMT but in this case time has to be substracted from time of GREENWICH.

hope,this would be helpful.