August 20th fell on a Friday most recently in 2010 and we are currently in a dip where this particular day won't show up on a Friday for the next nine years (we're currently in 2012) so this date won't fall on Friday until 2021 - seems a long time. However, after 2021, there will only be six years before August 20 falls on Friday again and after 2017 there will be literally only five years until it occurs again in 2032, then six years after that it occurs again and then it is the eleven-year gap.
Between 1970 and 1977, June 20 fell on a Friday in 1975.
2018, 2029, 2035, 2040, etc.
Twice, in the US. August 20 will fall on a Saturday in the year 2011 and 2016.
in 2001, in 2007 and in 2012
August 20 2010 was a Friday.
August 20, 1999 was a Friday.
August 20, 1971 fell on a Friday.
That was on a Friday.
Friday
Friday
A Friday.
August 20 1973 was a Monday.