Template:Zodiac date

–

calculates duration of tropical sign  (running 1 to 12 for Aries to Pisces) in the current year (2024), UTC.

the sine term accounts for the eccentricity of the Earth's orbit. Accuracy about 1-2 hours.

2009:
 * Mar 20 	11:44
 * Jul 21 	05:45 	 ;
 * Sep 22 	21:18   ;
 * Dec 21 	17:47   ;

=