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Regardless of your position, with what reference are time figures transmitted?
  • A
    Winter time.
  • B
    Local time.
  • C
    Greenwich time.
  • D
    UTC.

ICAO Annex 10 — Aeronautical Telecommunications
Chapter 3. General Procedures for the International Aeronautical Telecommunication Service
3.4 Time system

3.4.1 Universal Co-ordinated Time (UTC) shall be used by all stations in the aeronautical telecommunication service. Midnight shall be designated as 2400 for the end of the day and 0000 for the beginning of the day.

3.4.2 A date-time group shall consist of six figures, the first two figures representing the date of the month and the last four figures the hours and minutes in UTC.

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