H A D | astro.h | 5 #define day_length(year,month,day,lon,lat) \ argument 6 __daylen__( year, month, day, lon, lat, -35.0/60.0, 1 ) 11 #define day_civil_twilight_length(year,month,day,lon,lat) \ argument 12 __daylen__( year, month, day, lon, lat, -6.0, 0 ) 17 #define day_nautical_twilight_length(year,month,day,lon,lat) \ argument 18 __daylen__( year, month, day, lon, lat, -12.0, 0 ) 23 #define day_astronomical_twilight_length(year,month,day,lon,lat) \ argument 24 __daylen__( year, month, day, lon, lat, -18.0, 0 ) 37 #define civil_twilight(ts,lon,lat,start,end) \ argument 43 #define nautical_twilight(ts,lon,lat,start,end) \ argument [all …]
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