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ICSE Class 9 Geography Question 3 of 6

Self Practice Questions — Question 4

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Question 4

Calculate the local time in New York (75°W) when it is 10 a.m. in Nigeria (15°E)?

Answer
  • The longitudinal difference between New York and Nigeria is: 75° + 15° = 90°
  • For 1° longitudinal difference time difference is 4 minutes.
  • So, for 90° longitudinal difference, the time difference is: 90° x 4 = 360 minutes or 6 hours.
  • As New York is situated in the west of Nigeria, the local time at New York will be: ( 10 a.m. - 6 hours) = 4 a.m.