<Tr> <Td> April </Td> <Td> 1900, 1906, 1917, 1923, 1928, 1934, 1945, 1951, 1956, 1962, 1973, 1979, 1984, 1990, 2001, 2007, 2012, 2018, 2029, 2035, 2040, 2046, 2057, 2063, 2068, 2074, 2085, 2091, 2096 </Td> <Td> Common: Monday, Leap: Sunday </Td> <Td> G, AG </Td> </Tr> <Tr> <Td> May </Td> <Td> 1904, 1910, 1921, 1927, 1932, 1938, 1949, 1955, 1960, 1966, 1977, 1983, 1988, 1994, 2005, 2011, 2016, 2022, 2033, 2039, 2044, 2050, 2061, 2067, 2072, 2078, 2089, 2095, 2100 </Td> <Td> Common: Saturday, Leap: Friday </Td> <Td> B, CB </Td> </Tr> <Tr> <Td> June </Td> <Td> 1902, 1913, 1919, 1924, 1930, 1941, 1947, 1952, 1958, 1969, 1975, 1980, 1986, 1997, 2003, 2008, 2014, 2025, 2031, 2036, 2042, 2053, 2059, 2064, 2070, 2081, 2087, 2092, 2098 </Td> <Td> Common: Wednesday, Leap: Tuesday </Td> <Td> E, FE </Td> </Tr> <Tr> <Td> July </Td> <Td> 1900, 1906, 1917, 1923, 1928, 1934, 1945, 1951, 1956, 1962, 1973, 1979, 1984, 1990, 2001, 2007, 2012, 2018, 2029, 2035, 2040, 2046, 2057, 2063, 2068, 2074, 2085, 2091, 2096 </Td> <Td> Common: Monday, Leap: Sunday </Td> <Td> G, AG </Td> </Tr>

Where did friday the 13th superstition come from