| 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
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