Tomorrow is Michaelmas if your parish is named St. Michael's or St. Michael and All Angels. Also if your parish is something like "Grace" and has adopted St. Michael as a patron. Otherwise you must wait until Monday. Party on!
Mickle Mirth at Michaelmas, 2005:
The church in the picture, St. Michael's in Norman, Oklahoma, no longer has a medieval banquet as part of their patronal festivities. Nowadays they have a fair, which was on Saturday last week.
A nice site provided by the U.S. Naval Observatory allows us to see the moon (in a manner of speaking) even when conditions do not favor naked-eye observation.