/// <summary> /// Gets a bool value that indicates whether the date systems used in the workbook starts in 1904. /// The default value is false, meaning that the workbook uses the 1900 date system, /// where 1/1/1900 is the first day in the system. /// </summary> /// <returns>True if the date systems used in the workbook starts in 1904</returns> public bool IsDate1904() { return(XssfWorkbook.IsDate1904()); }