order_created int(10) , not date

Hi!
We re creating some scripts to make hikashop fully compatible with a delphi software.
We are in the orders table and the programmer is asking to have the order_created from int(10) to date, so that he can import this into his system.

If I change it manually from phpmyadmin is it ok? If not, can you help us with a script or direction on how to convert int to date?

The delphinet programmer needs time like 13/12/2015 15:15
is it possible to give an idea?

If he's a programmer, you'd expect he's heard of it. Otherwise here's a classic reference: php.net/manual/en/datetime.settimestamp.php