Thread: NTSB: Mesa CRJ700 narrowly avoids Cessna single on Allentown runway
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Old 09-23-2008 | 08:45 AM
  #17  
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SmoothOnTop
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Originally Posted by WMUPilot
1945 local is not dusk, not even close.

You're right, the sun set at 1856 local in my home town.

Dusk is more like 1830 there...

Dusk
Same as Civil Dusk; the time at which the sun is 6 degrees below the horizon in the evening. At this time objects are distinguishable but there is no longer enough light to perform any outdoor activities.

U. S. Naval Observatory
Astronomical Applications Dept.
Civil Twilight for 2008
ALLENTOWN, PENNSYLVANIA
Location: W075 29, N40 36
September 19 1831 local
September 20 1829 local
September 21 1827 local
September 22 1826 local
Last edited by SmoothOnTop; 09-23-2008 at 10:46 AM. Reason: see post 19,thanks
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