Hi, this is the first time I have answered here...
But - It was a Thursday!
Mon - Tues - Wed - Thurs - Fri - Sat - Sun
2011 - 15/04 will land on a Fri
2010 - 15/04 landed on a Thursday
2009 - 15/04 landed on a Wednesday
2008 - 15/04 landed on a Tuesday
2007 - 15/04 landed on a Sun
2006 - 15/04 landed on a Sat
Every year you count forward - The date will be 1 day of the week further from the current year. HOWEVER - Taking in to account leap years (every forth year) this means that every fourth year will have the day of the week moved 2 spots forward...
Example:
Mon = 1
Tues = 2
Wed = 3
Thurs = 4
Fri = 5
Sat = 6
Sun = 7
Currently 15/04/2010 is on a Thursday "4"
Next year, 15/04/2011 will = "5"
15/04/2012 will ="7" - We have gone 2 days in advance due to the leap year!
2013 = 1 (mon)
2014 = 2 (tues)
2015 = 3 (wed)
2016 = 4 (thurs)
2017 = 6 (sat)
2018 = 7 (sun)
and so on...
SO - counting backwards and taking in to account the leap years - you will end up with 15/04/1965 landing on a THURSDAY :)
March 15 1965 was a Monday.
15 August 1965 was a Sunday.
September 15, 1965 fell on a Wednesday.
November 15, 1965 fell on a Monday.
April 15 1917 was a Sunday.
15 April 2000 was a Saturday.
15 April 1980 was a Tuesday.
15 April 1959 was a Wednesday.
15 April 1944 was a Saturday.
April 15 1997 was a Tuesday.
April 15, 1992 was a wednesday.
April 15 2010 was a Thursday.