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The headquarters (HQ) of an airline is located at Schiphol, Netherlands (52°19'N, 004°46'E, UTC+2 hours). One of its aircraft departs from Quito, Ecuador (00°08'S, 078°21'W, UTC-5 hours) at 22:30 ST on the 26th August local date and flies to Nairobi, Kenya (01°19'S, 036°56′E, UTC + 3 hours). The flight time is 11 hours 14 minutes. What is the Standard Time (ST) and local date at the airline HQ when the aircraft arrives at its destination?
  • A
    16:44 ST on the 27th August
  • B
    17:44 ST on the 27th August
  • C
    06:44 ST on the 26th August
  • D
    09:44 ST on the 27th August

Standard Times (ST) or Zone Times are set by the government or ruling authority of a country.

  • UTC take-off from Quito: ST take-off from Quito + UTC correction = 22:30 26th August + 05:00 = 03:30 27th August.
  • UTC time of arrival at Nairobi, Kenya: UTC take-off from Quito + Flight time = 03:30 27th August +11:14 = 14:44 27th August.
  • ST and local date at Schiphol airline HQ when the aircraft arrives at destination Nairobi, Kenya: UTC time of arrival at Nairobi, Kenya + UTC correction = 14:44 27th August + 02:00 = 16:44 ST 27th August.​​​​​​​

NOTE:
Always go through UTC for safer calculations.

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