code: public static int computeEasternSundayNumber(final int year)
  	{
  		final int i = year % 19;
  		final int j = year / 100;
  		final int k = year % 100;
  		final int l = (19 * i + j - j / 4 - (j - (j + 8) / 25 + 1) / 3 + 15) % 30;
  		final int m = (32 + 2 * (j % 4) + 2 * (k / 4) - l - k % 4) % 7;
  		return (l + m - 7 * ((i + 11 * l + 22 * m) / 451) + 114);
  	}
docs: Computes the number from eastern sunday for the given year. Year should be greater the 1583.
  
  @param year
  The year to compute the number from eastern sunday.
  @return The number from eastern sunday.