The sun rises two hours earlier in Arunachal Pradesh as compared to Gujarat in the West but the clocks shows the same time how does this happen?(4Marks)
Ans:
*India lies between 68° 7′ and 97° 25′ minutes East longitudes the longitudinal extension of India is nearly 30 degrees.
*The Earth takes 4 minutes of time to move one longitude to another longitude so total 360 longitudes equals to 24 hours.
In India there was a difference of longitudinal is nearly 30 degrees so 30 ×4=120mnts. That means 2 hours.
*So sun rises 2 hours earlier in Arunachal Pradesh compared to Gujarat.
*To avoid these time confusion every country adapted their local standard meridian.
*In India 82° 30′ minutes taken as standard meridian passing near Allahabad in Uttar Pradesh is the standard time for the whole country.
*so that the clocks shows the same time
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