On a Tuesday, a magician said, ``I made my wife disappear 31 days ago.'' What day of the week did he make her disappear?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
On a Tuesday, a magician said, ``I made my wife disappear 31 days ago.'' What day of the week did he make her disappear?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
\mbox{Saturday}
On a Tuesday, a magician said, ``I made my wife disappear 31 days ago.'' What day of the week did he make her disappear?
train