Năm 1999 có bao nhiêu ngày Thứ 2

4/1/1999 11/1/1999 18/1/1999 25/1/1999 1/2/1999 8/2/1999 15/2/1999 22/2/1999 1/3/1999 8/3/1999 15/3/1999 22/3/1999 29/3/1999 5/4/1999 12/4/1999 19/4/1999 26/4/1999 3/5/1999 10/5/1999 17/5/1999 24/5/1999 31/5/1999 7/6/1999 14/6/1999 21/6/1999 28/6/1999 5/7/1999 12/7/1999 19/7/1999 26/7/1999 2/8/1999 9/8/1999 16/8/1999 23/8/1999 30/8/1999 6/9/1999 13/9/1999 20/9/1999 27/9/1999 4/10/1999 11/10/1999 18/10/1999 25/10/1999 1/11/1999 8/11/1999 15/11/1999 22/11/1999 29/11/1999 6/12/1999 13/12/1999 20/12/1999 27/12/1999