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Old October 3rd 06, 01:08 PM posted to rec.aviation.soaring
Surfer!
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Default Sunset and nigh flying definitions

In message . com, Ian
Strachan writes
snip

Civil Twilight ends in the evening when the centre of
the sun's disc is 6 degrees below the horizon and begins in the morning
when the centre of the sun's disc is 6 degrees below the horizon".

Snip

The phrase 'civil twilight' always leaves me wondering what uncivil
twilight is...

(I'll get my coat)

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