You're confusing a published build or something with when the page went live. I worked on this project and we started after summer last year. I don't want to argue the issue, and you shouldn't take my word for it, but if you look into it, you should be able to find a date before yours.
I wish you the best moving forward with whatever projects you end up working on.
Edit: if need be, we have git logs dating back to mid October. I'm not interested in making a stink about any of this though, it was more just an FYI