Beginning of daylight April to September
Beginning of daylight October to March
Coordinated Universal Time
Declared density chart – Autumn (March–May) – Spring (September–November)
Declared density chart – Summer (December–February)
Declared density chart – Winter (June–August)
Designated remote areas 1
Designated remote areas 2
End of daylight April to September
End of daylight October to March
Example of Domestic Flight Notification Form