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2 – preparat i on
Consequently, the presence of cloud cover, poor visibility or high terrain to
thewest of an aerodromewill cause daylight toend at a time earlier than that
extracted from the appropriate graph. Allowance should bemade for these
factorswhen planning a flight having anETA near theendof daylight.
NAIPS automatically computes first light and last light. This information can
be provided through pilot access, as part of a telephone briefing, or from
Flightwatch (AIPGEN 2.7).
LOCALTIME
Local Time inAustralia falls into three separate zones:
• EST is used in theStates of NewSouthWales (except theBrokenHill
Area), Queensland, Victoria, Tasmania and theAustralianCapital Territory;
• CST is used in theState of SouthAustralia, theNorthern Territory and the
BrokenHill area; and
• WST is used in theState ofWesternAustralia.
However, certainStates introduce local Summer Time each year between
October of that year andMarch of the succeeding year, which adds an
additional hour to the local time applicable in that State.
NOTAM or AIPSupplementswill be issueddetailing revisedhours of
operation for those aeronautical facilities affectedby local time changes
duringperiods of StateSummer Time andwhich do not have such hours
promulgated inAIP.
daylight anddarkness