There have been 9 Friday the 13th of Septembers since 1956 as follows:
1957, 1963, 1968, 1974, 1985, 1991, 1996, 2002 and 2013.
September 13 fell on a Friday four times between 1981 and 2012, in 1985, 1991, 1996 and 2002.
As of Monday the 15th of December 2014, there have been 3027 days since the 1st of September 2006.
There have been 9: 1951 1956 1962 1973 1979 1984 1990 2001 2007 2012 will also have a Friday the 13th of July.
There were six of them. They were in 1974, 1985, 1991, 1996, 2002 and 2013.
Including 1948, there have been 10 of them. They were in 1948, 1954, 1965, 1971, 1976, 1982, 1993, 1999, 2004 and 2010.
since 1956
9 times, in the following years: 1957 1963 1968 1974 1985 1991 1996 2002 2013
Since 1956
Since 1956
At this moment, it has been 13.5 years and counting since the September 11 attacks. (to be updated September 11, 2014)
Since September 2004 in Britain, since September 2011 in the U.S.
Only since 1956