Haven't gotten a response back from the site owner of Fimfiction.net after sending them a message a couple weeks ago; I will try sending another soon.
I know that the posts (if there are any) do get dated with a year, but that of course is sketchy for basing the year on. And the stories from the author's creation dashboard (or whatever is a good word for that) have a year on them for "Last Modified", but that doesn't help any if it is not there in the target html.
Oh well, it's ultimately a small thing. Anyways, keep up the awesome work!