Give a stream of consciousness and then the final answer. Set in the fictional town of Hawkins, Indiana, in the 1980s, the first season focuses on the investigation into the disappearance of a young boy amid supernatural events occurring around the town including the appearance of a girl with psychokinetic abilities who helps the missing boy's friends in their own search. The second season, titled Stranger Things 2, is set a year after the first, and deals with attempts of the characters to return to normal and consequences that linger from the first season.

Based on this passage, when did stranger things season one take place?
The relevant sentence in the passage is: Set in the fictional town of Hawkins, Indiana, in the 1980s, the first season focuses on the investigation into the disappearance of a young boy amid supernatural events occurring around the town including the appearance of a girl with psychokinetic abilities who helps the missing boy's friends in their own search.
So, the final answer is the 1980s.