Question: When did thirteen reasons why season 1 come out?
Answer: March 31, 2017
Disambiguated questions and answers: question: When did 13 Reasons Why Season 1 come out on Netflix?
When did 13 Reasons Why Season 1 soundtrack come out?
answer: March 31, 2017
March 30, 2017
Natural Questions answer: March 31 , 2017 (from the Wikipedia article "13 Reasons Why")