So, not the awful film with Tom Cruise in it, more the origin of Thursday. Just as with Friday last week having norse origins, it would appear that Thursday belongs to Thor (or Thunor if you're being alternative), so it's actually Thor's day. 

Well, Thor can have it back as far as I'm concerned today, it's peeing down over here. Ah well at least no-one's making me watch that terrible film again, there's always a silver lining somewhere =]