*** ce 27 3 What Does Genesis Say? ***
It would seem reasonable that the “days” of Genesis could likewise have embraced long periods of time—millenniums.
*** rs 126 Evolution ***
Thus the ‘days’ of Genesis chapter 1 could reasonably be thousands of years long.
*** it-1 594 Day ***
This flexible use of the word “day” to express units of time of varying length is clearly evident in the Genesis account of creation. Therein is set forth a week of six creative days followed by a seventh day of rest. The week assigned for observance by the Jews under the Law covenant given them by God was a miniature copy of that creative week. (Ex 20:8-11) In the Scriptural record the account of each of the six creative days concludes with the statement: “And there came to be evening and there came to be morning” a first, second, third, fourth, fifth, and sixth day. (Ge 1:5, 8, 13, 19, 23, 31) The seventh day, however, does not have this ending, indicating that this period, during which God has been resting from his creative works toward the earth, continued on. At Hebrews 4:1-10 the apostle Paul indicated that God’s rest day was still continuing in his generation, and that was more than 4,000 years after that seventh-day rest period began. This makes it evident that each creative day, or work period, was at least thousands of years in length. As A Religious Encyclopaedia (Vol. I, p. 613) observes: “The days of creation were creative days, stages in the process, but not days of twenty-four hours each.”—Edited by P. Schaff, 1894.
What would happen if a JW in good standing all of a sudden were to start stating, whenever it came up, say in a talk from the platform, or in an answer, or in conversaition that "a CD is 7000 years long." Would you get into trouble for saying something that the Society still officially teaches but which, for whatever reasons, it no longer mentions?
We shouldn't be dogmatic.