Friday the 13th or Sunday the 31st?

There is probably a day that is more rare like Sunday the 31st. Not only are there 7 months without a 31st, but how often is it on a Sunday? Well asking questions without answers would not be very fair. In this century, there have been only 6 Sunday the 31st. Wednesday the 31st tops out at a count of 10. While in that same timer period there have been 13 Friday the 13ths! Oh scary! It's the 13th 13th! Has there been a Friday the 13th Part 13 movie yet?
















Havarti, Spinach, Mushrooms, Pinenuts.