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An airline company has its headquarters at Schiphol (UTC+2h). An aircraft takes off from Quito at 4th September ST 22:30 (UTC-5h) and flies to Lagos (UTC+3h). Flight time is 11:14. What is the ST at the headquarters at the time of arrival of the aircraft?

  • A
    5th of September 16:44 ST.
  • B
    5th of September 17:44 ST.
  • C
    4th of September 13:15 ST.
  • D
    4th of September 16:44 ST.

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 4th of September + 05:00 = 03:30 5th of September.
  • UTC time of arrival at Lagos: UTC take-off from Quito + Flight time = 03:30 5th of September +11:14 = 14:44 5th of September.
  • ST at Schiphol headquarters at the time of arrival of the aircraft at Lagos: UTC time of arrival at Lagos + UTC correction = 14:44 5th of September + 02:00 = 5th of September 16:44 ST.

NOTE:
​​​​​​​Always go through UTC for safer calculations.

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