Năm 1977 có bao nhiêu ngày Thứ 4

5/1/1977 12/1/1977 19/1/1977 26/1/1977 2/2/1977 9/2/1977 16/2/1977 23/2/1977 2/3/1977 9/3/1977 16/3/1977 23/3/1977 30/3/1977 6/4/1977 13/4/1977 20/4/1977 27/4/1977 4/5/1977 11/5/1977 18/5/1977 25/5/1977 1/6/1977 8/6/1977 15/6/1977 22/6/1977 29/6/1977 6/7/1977 13/7/1977 20/7/1977 27/7/1977 3/8/1977 10/8/1977 17/8/1977 24/8/1977 31/8/1977 7/9/1977 14/9/1977 21/9/1977 28/9/1977 5/10/1977 12/10/1977 19/10/1977 26/10/1977 2/11/1977 9/11/1977 16/11/1977 23/11/1977 30/11/1977 7/12/1977 14/12/1977 21/12/1977 28/12/1977