Spring Equinox in Dallas
Equinox Calendar Mid-day March 21, 2012. The sun’s rays will pass through the aperture in the sculpture and strike the sphere on the ground below. The sun’s angle at this time is calculated by subtracting the degree of latitude of the site from 96 degrees.
Due to the uneven elliptical course the earth follows around the sun as well as the inclination of the earth’s axis the sun is seven minutes late in the spring and seven minutes early in the autumn. Because the location west from the CST meridian another 27 minutes must be added to the 90 degree meridian.
March 21: 12:34 p.m. CST or 1:34 Daylight Savings Time
September 21: 1:20 p.m.
After five years of blogging on MRSA this site has been crashed.
Sculptor: J.V. House