Hi SpannerintheWorks!
Here are the references for the following Armageddon Prediction Dates:
1984 -- Because the Watchtower Society at one time said that "A Generation" lasts 70 years, and 1914 + 70 years is 1984
1994 -- Because the Watchtower Society at one time said that "A Generation" lasts 80 years, and 1914 + 80 years is 1994
2000 -- Below is a Quote about this one.
The Watchtower January 1st 1989 Issue, Page 12:
"The apostle Paul was spearheading the Christian missionary activity. He was also laying a foundation for a work that would be completed in our 20th century,".
HOWEVER, in the Bound Volume Reprint, they CHANGED IT TO SAY:
"...a work that would be completed in our day,"
They did not even include a Footnote to mention that they changed it either.