| H A D | astro.h | 29 #define day_length(year,month,day,lon,lat) \ argument
30 __daylen__( year, month, day, lon, lat, -35.0/60.0, 1 )
35 #define day_civil_twilight_length(year,month,day,lon,lat) \ argument
36 __daylen__( year, month, day, lon, lat, -6.0, 0 )
41 #define day_nautical_twilight_length(year,month,day,lon,lat) \ argument
42 __daylen__( year, month, day, lon, lat, -12.0, 0 )
47 #define day_astronomical_twilight_length(year,month,day,lon,lat) \ argument
48 __daylen__( year, month, day, lon, lat, -18.0, 0 )
61 #define civil_twilight(ts,lon,lat,start,end) \ argument
67 #define nautical_twilight(ts,lon,lat,start,end) \ argument
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