Puzzle: Friday the Thirteenths

There is a puzzle on LessThanDot

The goal is to identify all friday the thirteenths for a given timeframe. We'll use a relatively small number of years, like 10. This should make it a little easier in procedural languages.

I posted my SQL solution, what about you?

Go here: Friday the Thirteenths and show me what you got. Make sure to use the [hide][/hide] tags so you don't spoil it for other people