Correct Answer - Option 2 : 4 minutes
There are 360° of longitudes
- The earth takes 24 hours to complete 1 rotation or 360° of longitudes.
- This means that the earth covers 15° of longitudes every (1)hour.
- (1 hour= 60minutes, divided by 15°/hour = 4 minutes per longitude).
- 1° of longitude takes 4 minutes.
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Thus, there is a difference of 4 minutes for 1° of longitude.
Hence, the correct answer is 4 minutes.
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A time zone is an area that observes a uniform standard time for legal, commercial, and social purposes.
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Time zones tend to follow the boundaries between countries and their subdivisions instead of strictly following longitude because it is convenient for areas in frequent communication to keep the same time.