Convert date into exponential format

Hi,

I have a date & I want to convert into exponential format & how do I convert this exponential format back to the date. I need to have flexibility in customizing the date as per the need. How can I do this?

Example:

let's try to convert 10/12/2007 into exponential format. After converting into exponential form, I want to convert it back to 10/12/2007. At the same time, I want to have the flexiblity of showing the date as 12/10/2007 .

Hope it's clear. How do i do this?

Full points will be awarded to the first correct complete answer.

Looking forward for your replies. Thank you.