No Tiompan, but if I knew the answer I wouldn't have asked the question... LOL
Bolton isn't on that list as it is a Lothian's festivals page.
I guess when I see the detail and amount of information on the other pages of that site I think these lost festivals must be something which I am too dumb to have learned about so far, which, lets face it, happens a lot since this whole area of study is new to me.
March 5th old calendar would probably put it near the festival of the serpent roughly. What is the alignment though. Guess I will have to wait for the site to have all the information posted on it. It's under re-construction after all.