Hard Times - S1-E3
Corrected entry: Aziraphale cites the only prophecy from Agnes Nutter that he could find as one for 1972, "do not buy Betamax" (a reference to the home video format war). Betamax was only launched in 1975 starting in Japan, so this advice should have been for then, not 1972. These prophecies were completely, even ludicrously accurate, so that excludes any explanation that she was simply a few years off, because she was never wrong. (00:19:10)
Correction: Aziraphale is not quoting from The Book, but an extract from a publisher's catalogue, and as a (newly) published author, I can tell you they are rotten with misquotes and other inaccurate information.
It's probably true in your case, but this was a few hundred years earlier? And she would have corrected the proofs, surely? Besides, I don't think the makers deliberately planned this (adding a misprint for more realism).
Spiny Norman