The keyword phrase "when was patriots day filmed" is an adverbial interrogative, functioning as a direct query for a specific time frame. The principal photography for the film Patriots Day commenced on March 29, 2016, and concluded in mid-July of the same year.
The production schedule was primarily centered in Massachusetts to ensure authenticity. Filming took place across several locations, including Quincy, Malden, Framingham, and the former South Weymouth Naval Air Station, where a large-scale, detailed replica of the Boylston Street finish line area was constructed for the bombing and shootout sequences. A pivotal and authentic component of the schedule involved filming scenes with actor Mark Wahlberg at the actual finish line of the Boston Marathon during the live event on April 18, 2016.
This concentrated filming period during the spring and summer of 2016 facilitated a swift post-production timeline. The film was subsequently prepared for a limited release in key cities on December 21, 2016, followed by a wide theatrical release on January 13, 2017. The production's temporal alignment, particularly its overlap with the 2016 marathon, was a deliberate choice to ground the cinematic narrative in the contemporary reality of the event it depicts.