I am pretty sure I am the only one here who saw the original broadcast. For many reasons it had more impact than something similar would today. The tensions between the super powers dominated the news.
https://www.usatoday.com/story/entertainment/tv/2023/11/20/the-day-after-1983-movie-turns-40/71570792007/
Well worth watching - especially if you give it some slack considering the passage of time.