We are a LUNAR Lodge. That means we meet on the Monday on or before a full moon.
In olden days they did this so they could find their way to and from the building with their horse and/or buggy. They didn't have much in the way of street lights back then.
Most Lodges used to follow this way of thinking. Over the years though it was easier to move it to standard night of the month, i.e. first Monday or third Thursday. We at Morrison though want to cling to our roots and keep em guessing!