I’m a child of the 1950s not the 80s.
Television went off the air at 11:30 after the newscast. There weren’t 24 hour video diversions and personal computers to distract you and keep you up late.
Since my teen years I go to sleep at 1am (meaning turn off the light after I may have been reading in bed) and I wake automatically at 5am. I don’t use an alarm clock, I have an internal clock.
There are no electric or electronic devices ion my bedroom to disturb sleep. This means nothing is plugged in which has colored lights showing it is charged, charging, synced to wifi, etc. My cell phone is on my desk in my home office, it does not come to the bedroom. The days of a baby monitor are gone. no noises to wake us during the night. I let the dogs out at midnight and again at 5:10.
I also drink coffee top relax at night, the caffeine does not keep me up, Mrc. CTL cannot drink caffeine after 3PM if she wants a good night sleep.
When the grandchildren are here for the summer we have set sleep times. Under 5, 7:30pm, 5-8, 8:30 pm, 8-13, 9pm, Teenagers 10:30pm and everyone up by 7:30, 8am minyan in the house, 8:45 breakfast.