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Refer to figure.
Referring to the TAF issued for FAJS (Johannesburg), what is the valid forecast period expressed in UTC?

  • A

    0700 UTC to 1800 UTC

  • B

    0600 UTC to 1800 UTC

  • C

    0700 UTC to 1600 UTC

  • D

    0000 UTC to 1200 UTC

A TAF (Terminal Aerodrome Forecast) contains two time references that must not be confused. 

The first is the ISSUE TIME, which is when the TAF was prepared and disseminated by the meteorological office. 

The second is the VALIDITY PERIOD, which defines the forecast period during which the meteorological information applies. 


Full FAJS TAF: FAJS  200600Z  200718  06008KT  CAVOK  BECMG 0709  06012KT  TX31/12ZTN23/07Z=

200600Z = Issue time: day 20, 0600 UTC.
200718  = Validity period: day 20, 0700 UTC to day 20, 1800 UTC.
06008KT = Surface wind 060° at 8 knots.
CAVOK   = Visibility ≥10 km, no significant cloud, no significant weather.
BECMG 0709 06012KT = Becoming between 0700 and 0900 UTC, wind changing to 060°at 12KT.
TX31/12Z = Maximum temperature 31°C at 1200 UTC.
TN23/07Z = Minimum temperature 23°C at 0700 UTC.

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