I have in front of me the old "green bible" - this one revised in "1970 C.E." - on page 1461 there is the "table of the books of the bible". The columns show name of book/writer/place written/writing completed/time covered.
In the "Time Covered (B.C.E.)" column for Genesis it says:-
After 1:2: (meaning Ch1 v 2)
46,026 - 1657
I also have in front of me a deluxe 1984 revision.
In the 1984 revision we have:
"In the beginning" to 1657
As the creative days become more embarrassing the awkward dates are dropped.
I surmise that 46,026 is 6 creative days at 7000 = 42,000 plus the 4026 BCE date given for Adam's creation at the end of the sixth day. Add the final creative day (of god's rest) of 7000 years and we get to Blondie's 49,000 years, bringing us to the end of the 1000 year reign in 2975 C.E. (1975 CE being the start of it.)
Oh how all this bollocks made sense to me as a teenager who liked to read. Can you imagine today's jw youngsters wading through this lot?