Năm 1990 có bao nhiêu ngày Thứ 7

6/1/1990 13/1/1990 20/1/1990 27/1/1990 3/2/1990 10/2/1990 17/2/1990 24/2/1990 3/3/1990 10/3/1990 17/3/1990 24/3/1990 31/3/1990 7/4/1990 14/4/1990 21/4/1990 28/4/1990 5/5/1990 12/5/1990 19/5/1990 26/5/1990 2/6/1990 9/6/1990 16/6/1990 23/6/1990 30/6/1990 7/7/1990 14/7/1990 21/7/1990 28/7/1990 4/8/1990 11/8/1990 18/8/1990 25/8/1990 1/9/1990 8/9/1990 15/9/1990 22/9/1990 29/9/1990 6/10/1990 13/10/1990 20/10/1990 27/10/1990 3/11/1990 10/11/1990 17/11/1990 24/11/1990 1/12/1990 8/12/1990 15/12/1990 22/12/1990 29/12/1990