src/Marando/AstroDate/AstroDate.php
public static function solsticeWinter($year)
    {
        $jd = static::solsticeDecember((int)$year, false);

        return AstroDate::jd($jd, TimeScale::TT());
    }
public static function solsticeWinter($year)
    {
        $jd = static::solsticeDecember((int)$year, false);

        return AstroDate::jd($jd, TimeScale::TT());
    }
public static function solsticeWinter ( $ year ) { $ jd = static :: solsticeDecember ( ( int ) $ year , false ) ; return AstroDate :: jd ( $ jd , TimeScale :: TT ( ) ) ; }
Creates a new AstroDate instance representing the Winter Solstice of the
provided year

@param  int $year

@return static
Creates a new AstroDate instance representing the Winter Solstice of the provided year