Since 1873, August 13 has fallen on a Friday 17 times. The occurrences are in the years: 1874, 1880, 1886, 1891, 1897, 1908, 1915, 1920, 1926, 1937, 1943, 1948, 1954, 1965, 1971, 1976, 1982, and 2021. The pattern can be determined using a perpetual calendar or a software tool for date calculations.
9 TIMES
As of now (Sept 2016), 12 times in 77 years.
5 times: 1985, 1991, 1996, 2002 and 2013.
12 times in the years 1937, 1943, 1948, 1954, 1965, 1971, 1976, 1982, 1993, 1999, 2004 and 2010. The next one will be in 2021.
Since 1968, the 13th of November has fallen on a Friday a total of 7 times. The years in which this occurred are 1970, 1981, 1987, 1992, 1998, 2009, and 2015. This pattern is determined by the way the Gregorian calendar cycles through the days of the week.
Any month starting on a Sunday will have a Friday the 13th as well as 5 Sundays... except February where that rule becomes a little wobbly and only happens about every 28 years... or something like that.
Since 1947, Good Friday has fallen on April 4 in the years 1958, 1969 and 1980. Good Friday will next fall on April 4 in 2042.
8 times, in 1969, 1975, 1980, 1986, 1997, 2003, 2008 and 2014.
Since 1964, August 8 has fallen on a Sunday in the following years: 1965, 1971, 1976, 1982, 1993, 1999, 2004, 2010 This is a total of eight occasions.
As of 2011, and since 1993, August 28 has fallen on Saturday in the following years: 1993 1999 2004 2011
Since 1954, September 13th has fallen on a Friday a total of 7 times. The years when this occurred are 1957, 1968, 1974, 1985, 1991, 1996, and 2002. The next occurrence will be in 2033.
10 times. The years are as follows: 1946 1957 1963 1968 1974 1985 1991 1996 2002 2013