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Vernal Equinox 2015

Started by RolandC, 03/20/2015 06:10PM
Posted 03/20/2015 06:10PM Opening Post
Just took this picture of the sun setting due west, about 15 minutes after the Vernal Equinox (7:08pm Central time). Roads here in the Midwest run very close to E-W for the most part. This part of north-west Illinois is composed of low rolling hills that the glaciers did not mow down. In the flatter parts of southern Illinois, the roads run for miles in a very straight line.

The settlers who first laid out these roads most probably used a magnetic compass to determine north. Fortunately here the magnetic north and true north are almost exactly the same.


Attached Image:

RolandC's attachment for post 59237
Posted 03/20/2015 06:14PM #1
This next photo shows the sun almost on the horizon, but because of atmospheric refraction, it is already set and just below the horizon. It is therefore slightly north of true west because of the angle of the setting sun at our 42 degree latitude.


Attached Image:

RolandC's attachment for post 149450