Calculation of Sunrise and Sunset Inflight
Hi all,
Out of curiousity, any of you guys have a rule of thumb regarding calculation of sunrise or sunset timing inflight ?
The usual way of us doing it is by trial and error, based on the LAT and LONG along our flight path and cross reference to the sunrise and sunset tables provided.
Another way which works along the equator is to plot 2 straight lines, 1 line being the takeoff time and landing time and the other being the sunrise/sunset time at departure airport and destination airport, both on the same graph. The point where the 2 lines intercept is where the sun will rise/set.
From my understanding, as we travels up north or down south, the relationship ceases to be linear anymore. Do correct me if I am wrong.
Any better ways of doing the calculation?
Thanks for sharing,
Cheers,
lion-g