Năm 1957 có bao nhiêu ngày Thứ 7

5/1/1957 12/1/1957 19/1/1957 26/1/1957 2/2/1957 9/2/1957 16/2/1957 23/2/1957 2/3/1957 9/3/1957 16/3/1957 23/3/1957 30/3/1957 6/4/1957 13/4/1957 20/4/1957 27/4/1957 4/5/1957 11/5/1957 18/5/1957 25/5/1957 1/6/1957 8/6/1957 15/6/1957 22/6/1957 29/6/1957 6/7/1957 13/7/1957 20/7/1957 27/7/1957 3/8/1957 10/8/1957 17/8/1957 24/8/1957 31/8/1957 7/9/1957 14/9/1957 21/9/1957 28/9/1957 5/10/1957 12/10/1957 19/10/1957 26/10/1957 2/11/1957 9/11/1957 16/11/1957 23/11/1957 30/11/1957 7/12/1957 14/12/1957 21/12/1957 28/12/1957