Calculate easter day of a year. incl. leap year support

CalculateEasterDay

/// <summary>
        /// Calculation based on https://da.wikipedia.org/wiki/P%C3%A5ske
        /// </summary>
        /// <param name="year"></param>
        /// <returns></returns>
        public DateTime GetEasterDateOfYear(int year)
        {            
            int a = year % 19;
            int b = (int)Math.Floor(year / 100m);//Heltal (rundet) ned) af aar / 100
            int c = year % 100;
            int d = (int)Math.Floor(b / 4m);
            int e = b % 4;
            int f = (int)Math.Floor((b + 8) / 25m);
            int g = (int)Math.Floor((b - f + 1m) / 3);

            int h = (19 * a + b - d - g + 15) % 30;
            int i = (int)Math.Floor(c / 4m);
            int k = c % 4;
            int l = (32 + 2 * e + 2 * i - h - k) % 7;
            int m = (int)Math.Floor((a + 11 * h + 22 * l) / 451m);
            int n = (int)Math.Floor((h + l - 7 * m + 114) / 31m);
            int p = (h + l - 7 * m + 114) % 31 + 1;

            return new DateTime(year, n, p);            
        }