As I recall, they were still teaching the chronology that 6000 years of man's existence, that is from the creation of Adam, was to end in 1975. The gentile times would end and usher in the next 1000 years (hence the '7000' on the platform) would be the Millenial reign.
That is true except they taught, and still teach that the Gentile Times ended in 1914 CE. That's 2,520 years from 607 BCE.
They now call the Creative Days "thousands of years" each rather than 7,000 years as they did.
I wonder how long they can hang on to this twaddle. You will not find many people who believe humans have been on the earth for just over 6,000 years.
George