One to add to Shirley's quotes.
*** w55 2/1 p. 93 Questions From Readers ***
● What are the reasons for changing the date of Adam’s creation first from 4028 B.C. to 4026 B.C. and now recently in the book “New Heavens and a New Earth” to 4025 B.C.?
... ... Undue concern seems to be manifested as to the date of Adam’s creation and some ask, What are the reasons for changing the creation date of Adam first from 4028 B.C. to 4026 B.C. and now recently in the book “New Heavens and a New Earth” to 4025 B.C.? Let us examine the advancements made in Bible chronology that have warranted the above adjustments as we have moved forward to newer positions of light as to God’s Word.—Prov. 4:18. ...
[Discussion of 'absolute dates' like AD 14 and 539 BCE, etc. More number-crunching, then ...]
... According to Genesis 1:24-31 Adam was created during the last part of the sixth creative-day period of 7,000 years. Almost all independent chronologists assume incorrectly that, as soon as Adam was created, then began Jehovah’s seventh seven-thousand-year period of the creative week. Such then figure that from Adam’s creation, now thought to be the fall of 4025 B.C., why, six thousand years of God’s rest day would be ending in the fall of 1976. However, from our present chronology (which is admitted imperfect) at best the fall of the year 1976 would be the end of 6,000 years of human history for mankind, 6,000 years of man’s existence on the earth, not 6,000 years of Jehovah’s seventh seven-thousand-year period. Why not? Because Adam lived some time after his creation in the latter part of Jehovah’s sixth creative period, before the seventh period, Jehovah’s sabbath, began. ...
... The very fact that, as part of Jehovah’s secret, no one today is able to find out how much time Adam and later Eve lived during the closing days of the sixth creative period, so no one can now determine when six thousand years of Jehovah’s present rest day come to an end. Obviously, whatever amount of Adam’s 930 years was lived before the beginning of that seventh-day rest of Jehovah, that unknown amount would have to be added to the 1976 date.
Not a good start.
Classic.