hrise              55 ext/date/lib/astro.h #define timelib_astro_sun_rise_set(ts,lon,lat,hrise,hset,rise,set)  \
hrise              56 ext/date/lib/astro.h         timelib_astro_rise_set_altitude( ts, lon, lat, -35.0/60.0, 1, hrise, hset, rise, set )