Năm 1999 có bao nhiêu ngày Thứ 6

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