<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def last_login_date(self):
 """ Date of user's last login """

        return sa.Column(
            sa.TIMESTAMP(timezone=False),
            default=lambda x: datetime.utcnow(),
            server_default=sa.func.now(),
        )