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The Day and Night Terminator Across the Earth
Map (c)
Apple Computers, Inc.
The maps below are showing the solar
terminator
at equidistant intervals of 1 hour.
Using the equirectangular projection map the distortion (both shape and
area) increases towards the poles.
(1)
Lines of simultaneous sunrise at summer solstice (June 21, declination
+23.4°)
and simultaneous sunset at winter solstice (December 22, declination
-23.4°):
(2) Lines of simultaneous sunset at winter solstice (December 22, declination -23.4°),
and simultaneous sunrise at summer solstice (June 21, declination +23.4°):
(3)
Lines
of simultaneous sunrise and sunset at equinox
(March 21, September 23, declination
0°):
More: maps
showing the lines of equal
solar altitude
Last update: 2008, Jul 15