Day is wrong prior to 10/15/1582

Due to leap year some days were skipped. The date mechanism does not account for that. See this site for days lost;

http://www.henk-reints.nl/cal/gregcal.htm

Basically Oct. 5 thru Oct. 14, 1582 were skipped. We went from Thursday October 4, 1582 to Friday October 15, 1582. However your calendar shows October 4 as a Monday. I have attached an implementation that illustrates this. Also follows is how java handles it (it is a little better).

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

try {

System.out.println(sdf.parse("1582-10-04"));

System.out.println(sdf.parse("1582-10-05"));

System.out.println(sdf.parse("1582-10-06"));

System.out.println(sdf.parse("1582-10-07"));

System.out.println(sdf.parse("1582-10-15"));

/* produces

• Thu Oct 04 00:00:00 CST 1582
• Fri Oct 15 00:00:00 CST 1582
• Sat Oct 16 00:00:00 CST 1582
• Sun Oct 17 00:00:00 CST 1582
• Fri Oct 15 00:00:00 CST 1582

*/

} catch (ParseException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}