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Determine the Standard Time (ST) and date of arrival in Chile, given the following information:

Route: New Zealand to Chile, crossing the international date line on an easterly course 
Departure time and date: 03:00 UTC, 19th November 
Flight time: 12 hours 30 minutes 
New Zealand ST: UTC + 12 hours 
Chile ST: UTC - 4 hours

  • A
    23:30, 18th November
  • B
    11:30, 18th November
  • C
    11:30, 19th November
  • D
    15:30, 19th November

The aircraft departs from New Zealand at 03:00 UTC 19th November.
The flight time is 12 h 30 min. Therefore, the arrival time (UTC) in Chile will be:

  • 03:00 UTC + 12:30 = 15:30 UTC, 19th November

The question states:
Chile ST: UTC - 4 hours

  • ST = 15:30 – 04:00 = 11:30 ST, 19th November

When the aircraft arrives in Chile, it will be 11:30 ST on the 19th of November.

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