一次搞清幾時True heading 幾時Magnetic heading

Ref https://www.casa.gov.au/resources-and-education/publications/industry-guides/pilot-guides/visual-flight-rules-guide

With reference to AIP HKG GEN 2.1

With reference to AIP Australia GEN 2.1:

With reference to CASA Visual Flight Rules Guide (VFRG):

Wind – ref to True:

1. Aerodrome weather and forecast
2. Grid point wind and temperature (GPWT) forecast

Notes: also ref AIP GEN 3.50

Wind – ref to Magnetic:

1. Aerodrome weather information service (AWIS)
2. Terminal information reciter (WATIR)
3. ATIS – Automatic Terminal Information Service

Runway heading – ref to Magnetic: 

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With reference to AIP Australia GEN 3.5