The subject of the inquiry is the proper noun "Patriots Day," referring to the 2016 American biographical thriller film directed by Peter Berg. The film was produced and held its world premiere in 2016, making that the primary year of its creation and initial release.
Principal photography for the film commenced on March 29, 2016, in Quincy, Massachusetts, and concluded later that year. The movie premiered at the AFI Fest on November 17, 2016. Following its festival debut, it received a limited theatrical release in New York, Boston, and Los Angeles on December 21, 2016, before a nationwide wide release on January 13, 2017.
Therefore, while its wide public release occurred in early 2017, the definitive year the film was made and first shown is 2016. This should not be confused with the official state holiday of the same name, which was established by proclamation in Massachusetts in 1894 to commemorate the anniversary of the Battles of Lexington and Concord.