I wish I had this problem with my earliest Notts memories because it would have meant I'd have watched them in the mid-70s and seen the likes of Needham, Carter and Bradd, rather than having to wait until I was nearly 13 in 1982 when everything is very vivid and clear and we were just coming towards the end of the golden era.
Both the Wolves and Liverpool games kicked off at 6:30pm, so finishing around 8:10pm (with the typical 10 minute HT break they had back then and next to no added time) they probably didn't need to turn the floodlights on with dusk an hour or so later.