SetCalendar

// Set the calendar to the specified date. // - nYear should be from 0 to 32000 inclusive // - nMonth should be from 1 to 12 inclusive // - nDay should be from 1 to 28 inclusive // 1) Time can only be advanced forwards; attempting to set the time backwards //   will result in no change to the calendar. // 2) If values larger than the month or day are specified, they will be wrapped //   around and the overflow will be used to advance the next field. //   e.g. Specifying a year of 1350, month of 33 and day of 10 will result in //    the calender being set to a year of 1352, a month of 9 and a day of 10. void SetCalendar(int nYear,int nMonth, int nDay);