I have an excel that has a column filled with date objects in this form: 20/12/2016.

I would like to convert them to string values of this form: 20161220, how could I achieve that?
[![enter image description here](https://i.stack.imgur.com/jyD2v.png)](https://i.stack.imgur.com/jyD2v.png)

[![enter image description here](https://i.stack.imgur.com/BDtQp.png)](https://i.stack.imgur.com/BDtQp.png)