How are Jonathan Cahn and Jeff Berwick Wrong about the Jubilee and Shemitah?

How are Jeff Berwick and Jonathan Cahn wrong? Jonathan in his Harbinger book is conveniently off by a year to match preferred dates. This is intellectually dishonest.

Shemitah years (Sept to Aug)
2015-16 Jubilee year
2014-15 Shemitah (3rd week of Tammuz with destruction of Temple Tisha B'Av)
2007-08 Housing (2nd week of Tammuz)
2000-01 911 (1st week of Tammuz)
1993-94 Bond debacle (Comet Shoemaker breaks into 21 pieces to start off Tammuz 17)
1986-87 Crash 1987
1979-80 Interest rate spike
1972-73 Not sure

1965-66 Jubilee year (not 1967)
Cahn makes the previous 7 sets of 7 off by a year.
He confuses the Jubilee for a Shemitah year.
The correct years are instead...
1964-65 Shemitah
1957-58 Vietnam War
1950-51 Korean war
1943-44 (not 1945)
1936-37 DJIA collapse
1929-30 Crash 1929
1922-23 Not sure

1915-16 Jubilee year (not 1914)

What changes would you make to the events on these dates?