Tafkas

# sun_flight_map.R
#
# Plot sun elevations along a flight path. 
#
# Airport information can be sourced from http://openflights.org/data.html.
# Note that the time zone offsets provided in their airports.dat never count
# daylight savings time.
#
# This code is for fun only, so it comes with no guarantee of accuracy and
# is not to be used for any serious purpose including making any decisions