On Sun, Mar 23, 2014 at 7:02 PM, Neville Michie <namichie at gmail.com> wrote: > can anyone out there point me to a source > for the exact time of the equinoxes and solstices > I think you want this: http://aa.usno.navy.mil/data/docs/geocentric.php e.g. RA 0 is 2014 Mar 20 16:57:07.5 or RA 12 is 2014 Sep 23 02:29:08.5