As reported by the Chicago Daily News, sister paper of the Chicago Sun-Times:
Chicagoans watching President Trump’s prime-time State of the Union address Tuesday might take such a time slot for granted.
To those in 1965, a televised prime-time State of the Union address was unprecedented, according to a Jan. 4, 1965 report in the Chicago Daily News.
“In a departure from the usual noon hour spectacle,” Washington Bureau Chief Peter Lisagor wrote, “[President Lyndon B. Johnson] will deliver his State of the Union message to a joint session of the 89th Congress at prime television viewing time (8 p.m. Chicago time).”
Lisagor said viewers could expect a peek at Johnson’s “Great Society” plan, which he cheekily described as an attempt at “making the fewest possible people unhappy and the most as reasonably satisfied as majorities can be.”
Americans today might recognize contemporary issues that were addressed in Johnson’s plan, such as “federal aid to schools that will not run afoul the old public v. parochial issue” and “programs to clean up the countryside and attack air and water pollution,” according toLisagor.

The front page of the Chicago Daily News, Jan. 4, 1965.