I love researching stuff and found this pretty neat site:
Book of Days - Distaff Day
It seems to date back quite far and I think it's totally cool they've selected the true historic day to hold this event!
I'm sure guys would be welcome there. We know first-hand knitters, crocheters, spinners, et. al. are wonderful and friendly people and I highly doubt they'd turn anyone away! Even if guys aren't allowed, I do think it's totally awesome for there to be a gathering of women joined in spirit by common fibers. (pun intended, couldn't help it! Seriously though. ;-) )