+ $h0=-0.8333; # this is for sun rise and sun set
+ ($risetime,$settime)=
+ do_rise_set_calculations($h0,$theta0,$lat,$lon,$alpha1,$delta1,
+ $alpha2,$delta2,$alpha3,$delta3);
+ $h0=-6.0; # this is for civil dawn and dusk
+ ($dawntime,$dusktime)=
+ do_rise_set_calculations($h0,$theta0,$lat,$lon,$alpha1,$delta1,
+ $alpha2,$delta2,$alpha3,$delta3);
+ $dawntime = "------" if( $dawntime eq "NoRise" );
+ $dusktime = "------" if( $dusktime eq "NoSet " );
+
+ return (
+ sprintf("%s", $dawntime), sprintf("%s",$risetime),
+ sprintf("%s", $settime), sprintf("%s",$dusktime),
+ $aznow+180,$hnow
+ );