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Re: equinox
From: Michael Dorl
Date: 2004 Mar 21, 19:13 -0600
From: Michael Dorl
Date: 2004 Mar 21, 19:13 -0600
At 07:48 PM 3/20/04 -0500, you wrote: >I get a declination of zero for the sun at 06:48:00 today on 3/20/04. >Don't have time to work out the longitude. > >Fred Just what defines the equinox? My calculations say the apparent declination was zero at about 6:48:58 so it sounds like we are talking about apparent declination. Apparent declination includes corrections for light time nutation precession annual aberration since the light time is some 8 minutes (of time), the SUN actually passed the ecliptic some 8 minutes earlier.
