sRA               216 ext/date/lib/astro.c 	sRA,        /* Sun's Right Ascension */
sRA               249 ext/date/lib/astro.c 	astro_sun_RA_dec( d, &sRA, &sdec, &sr );
sRA               252 ext/date/lib/astro.c 	tsouth = 12.0 - astro_rev180(sidtime - sRA) / 15.0;