Statistically the 13th falls on a Friday more often than any other day of the week. Im not sure how this âspecial/unluckyâ day works out for Gann/Elliot or other wave phenomena people (maybe they can commentâ¦) but I think it is worth noting that for the year 2006 -- Friday the 13 is in January, and especially October. In fact the only other time a Friday the 13th occurance is in October is in 2017, 2023, and 2028. Iâm not really a superstitious person but it doesnât necessarily matter what I think when it comes to market action â¦ (The below is from Wikipedia) Because the Gregorian Calendar 400-year cycle has a whole number of weeks, it is not possible for exactly 1 in 7 months to have a Friday the 13th. In fact, the 13th is more likely to be a Friday than any other day of the week. Over any given 400-year cycle the 13th day of the month occurs 4800 times. The distribution of 13th day of the month is as follows: Monday ( 685 or 14.27% ), Tuesday ( 685 or 14.27% ), Wednesday ( 687 or 14.31% ), Thursday ( 684 or 14.25% ), Friday ( 688 or 14.34% ), Saturday ( 684 or 14.25% ), Sunday ( 687 or 14.31% ). This means the 13th day of the month is slightly more likely to occur on a Friday.