The Earth rotates 360 degrees in 24 hours, meaning 15 degrees of longitude corresponds to 1 hour, or 1 degree corresponds to 4 minutes. The longitudinal extent of India is approximately from 68°7' E in the west (Gujarat) to 97°25' E in the east (Arunachal Pradesh). The difference in longitude is about 97°25' - 68°7' ≈ 29°18', which is close to 30 degrees.
Sunrise in eastern Arunachal Pradesh would be about how many hours before the sunrise in western Gujarat ?
Asked in UPSC NDA 2 2017 · Topic: Standard Time (Longitudinal Extent of India and its impact on local time differences)
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