Năm 1981 có bao nhiêu ngày Thứ 3

6/1/1981 13/1/1981 20/1/1981 27/1/1981 3/2/1981 10/2/1981 17/2/1981 24/2/1981 3/3/1981 10/3/1981 17/3/1981 24/3/1981 31/3/1981 7/4/1981 14/4/1981 21/4/1981 28/4/1981 5/5/1981 12/5/1981 19/5/1981 26/5/1981 2/6/1981 9/6/1981 16/6/1981 23/6/1981 30/6/1981 7/7/1981 14/7/1981 21/7/1981 28/7/1981 4/8/1981 11/8/1981 18/8/1981 25/8/1981 1/9/1981 8/9/1981 15/9/1981 22/9/1981 29/9/1981 6/10/1981 13/10/1981 20/10/1981 27/10/1981 3/11/1981 10/11/1981 17/11/1981 24/11/1981 1/12/1981 8/12/1981 15/12/1981 22/12/1981 29/12/1981