There's nothing like the smell of B.S. in the morning. . .
And another thing: Back in reality, the Feast of All Saints was already being celebrated in 373 A.D. to commemorate all the martyrs—those known and those "known but to God." At this time, most Celts were not Christian at all, but were painting themselves blue, and would continue to do so for another hundred years. All Hallows Eve is the vigil of All Hallows (i.e., All Saints). Big Catholic feasts were always celebrated with a vigil—such as Christmas Eve, the Easter Vigil, and Midsummer Night.