Năm 1999 có bao nhiêu ngày Thứ 4

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