Title: Hawaii Five-O (1968 TV series, season 8)
Content:  The season originally aired Fridays at 9:00-10:00 pm (EST) from September 12 to November 28, 1975 and Thursdays at 9:00-10:00 pm (EST) from December 4, 1975 to March 4, 1976.
Title: Hawaii Five-O (1968 TV series, season 8)
Content:  This is a list of episodes from the eighth season of Hawaii Five-O.
Title: Hawaii Five-0 (2010 TV series, season 8)
Content:  On March 23, 2017, CBS renewed the series for an eighth season, which premiered on September 29, 2017. Filming for the season began on July 8, 2017 with a traditional Hawaiian blessing. Series star Alex O'Loughlin made both his writer and directorial debut during the season. O'Loughlin directed the eighteenth episode of the season and wrote the story for the twenty-fourth episode of the season. The final script for the season was written around early March 2018. Filming on the final episode of the season concluded in the third week of April. The final episode of the season aired on May 18, 2018.
Title: Hawaii Five-0 (2010 TV series, season 8)
Content:  The eighth season of the CBS police procedural drama series Hawaii Five-0 premiered on September 29, 2017 for the 2017–18 television season. CBS renewed the series for a 23 episode eighth season on March 23, 2017. On November 6, 2017 CBS ordered an additional episode for the season and did the same again on February 8, 2018 bringing the count to 25 episodes. The season concluded on May 18, 2018. The eighth season ranked No. 18 for the 2017–18 television season and had an average of 11 million viewers. The series was also renewed for a ninth season. Due to pay disputes, this was the first season not to feature Daniel Dae Kim and Grace Park. This was also the first full season not to feature Masi Oka following his departure in the thirteenth episode of the seventh season. Meanwhile, Meaghan Rath and Beulah Koale joined as new main cast members. In addition, longtime recurring cast members Dennis Chun, Kimee Balmilero, and Taylor Wily were promoted to series regulars, while another longtime recurring cast member Ian Anthony Dale joined as a series regular and appeared in episodes seven through twenty.
Title: Hawaii Five-O (1968 TV series, season 5)
Content:  The fifth season of Hawaii Five-O premiered on September 12, 1972 and ended March 13, 1973. 24 episodes aired during this season. The Region 1 DVD was released on November 18, 2008.
Title: Hawaii Five-O (1968 TV series, season 12)
Content:  The season originally aired Thursdays at 9:00-10:00 pm (EST) from October 4 to November 29, 1979, Tuesdays at 9:00-10:00 pm (EST) from December 4, 1979 to January 15, 1980 and Saturdays at 9:00-10:00 pm (EST) from March 1 to April 5, 1980
Title: Hawaii Five-O (1968 TV series, season 8)
Content:  The season was released on DVD by Paramount Home Video.
Title: Hawaii Five-0 (2010 TV series, season 9)
Content:  The teaser trailer for the first episode was released on September 12, 2018. The season has been marketed as the series' fiftieth anniversary, being fifty years since the premiere of the original series in 1968. On August 13, 2018, it was announced that the season would have an advanced premiere screening along with an advanced premiere screening of Magnum P.I. The season premiered on September 28, 2018, in the 2018–19 television season. It held the same time slot of the previous five seasons airing Fridays at 9 p.m. ET, with the exception of the seventeenth episode which aired immediately after the sixteenth episode at 10 p.m. ET. The season concluded on May 17, 2019, after airing 25 episodes.
Title: Hawaii Five-O (1968 TV series, season 10)
Content:  The season originally aired Thursdays at 9:00-10:00 pm (EST).
Title: Hawaii Five-O (1968 TV series, season 7)
Content:  The season originally aired Tuesdays at 9:00-10:00 pm (EST).

Question: when does season 8 of hawaii five o premiere?
Answer: September 29, 2017.