I remember something like a countdown leading up to 1975.
Every assembly that went by, the co would get everyone excited with "brothers! It's only 5 (ex) assemblies until 1975!"
Then after nothing happened the reasoning was that there was a period of time between Adam's creation and Eve's, so that would somehow account for the delay.
Some still think it's "just around the corner" but you can sure tell that most realize they're not going to see it happen.