System.Globalization.EastAsianLunisolarCalendar.GetDayOfYear C# (CSharp) Method

        public override int GetDayOfYear(DateTime time) {
            CheckTicksRange(time.Ticks);

            int y=0;  int m=0; int d=0;
            TimeToLunar(time, ref y, ref m, ref d);

            for (int i=1; i<m ;i++)
            {
                d = d + InternalGetDaysInMonth(y, i);
            }
            return d;
        }