Q: Passage: In 2002, Bonanza was ranked No. 43 on TV Guide's 50 Greatest TV Shows of All Time, and in 2013 TV Guide included it in its list of The 60 Greatest Dramas of All Time. The time period for the television series is roughly between 1861 (Season 1) and 1867 (Season 13) during and shortly after the American Civil War.

Question: Based on this passage, when did the tv show bonanza take place?
Let's give stream of consciousness below
To answer the above question, the relevant sentence is: The time period for the television series is roughly between 1861 (Season 1) and 1867 (Season 13) during and shortly after the American Civil War. So the answer is roughly between 1861 ( Season 1 ) and 1867 ( Season 13 ) during and shortly after the American Civil War.