How to convert Julian date into a Calendar Date ?

[queenannsrev]

I need to convert a string of numbers into a Calendar date. The numbers will be in the following order 06066 yyddd format. Any help would be greatly appreciated. I am using vb.net

 

[JohnH]

Here is a formula http://en.wikipedia.org/wiki/Julian_date actually the Julian date is 7 digits, but '24' is commonly skipped like we usually did with '19' in the twentieth century.