Thanks for link btw is this database is created by you ?
In starting when i saw it i thought it's in the form of " dd/mm/yy "
Then i found that my last activity points were raised around 7-10 th of this month.
Now perfected it was raised on 8/11/2016 in the format i stated above
So according to this i will be Sr. Member on 22nd Nov 2016