Title: List of NCIS: Los Angeles episodes
Content:  NCIS: Los Angeles is an American television series that premiered on CBS on September 22, 2009. The series is set in Los Angeles, California, and follows the stories of the members of the Office of Special Projects, an undercover division of the Naval Criminal Investigative Service (NCIS). The show and its characters were introduced in a two-part episode during the sixth season of the television series NCIS on April 28 and May 5, 2009. NCIS: Los Angeles was renewed for an eleventh season on April 22, 2019, which premiered on September 29, 2019. On May 6, 2020, NCIS: Los Angeles was renewed for a twelfth season, which premiered on November 8, 2020. On April 23, 2021, NCIS: Los Angeles was renewed for a thirteenth season, which premiered on October 10, 2021.
Title: NCIS: Los Angeles (season 1)
Content:  The first season of the American television series NCIS: Los Angeles premiered on CBS on September 22, 2009, and concluded on May 25, 2010. It is the first spin-off series of NCIS. The series is set in Los Angeles, California, and follows the stories of the members of the Office of Special Projects, an undercover division of the Naval Criminal Investigative Service (NCIS). The show and its characters were introduced during the sixth-season episodes of NCIS titled "Legend (Part I)" and "Legend (Part II)". These episodes served as a backdoor pilot for the series. Season one was originally planned to have thirteen episodes. On October 7, 2009, after rating as the most watched new show of the Fall 2009 U.S. television season, CBS ordered a full set of 22 episodes, which was extended to 24 episodes on November 4, 2009. NCIS: Los Angeles ranked #9 most watched series for the 2009-10 U.S. TV season with a total of 16.08 million viewers.
Title: NCIS: Los Angeles
Content:  NCIS: Los Angeles is an American action television series combining elements of the military drama and police procedural genres, which premiered on CBS on September 22, 2009. The series follows the exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that specializes in undercover assignments. NCIS: Los Angeles is the first spin-off of the successful series NCIS and the second series in the NCIS franchise. The series originally starred Chris O'Donnell, Daniela Ruah, LL Cool J, Peter Cambor, Adam Jamal Craig, Linda Hunt and Barrett Foa. Cambor and Craig were respectively demoted to recurring status and killed 
Title: List of NCIS: New Orleans episodes
Content:  NCIS: New Orleans is an American television series that premiered on CBS on September 23, 2014. The series is set in New Orleans, Louisiana, and follows the stories of the members of the local office of the Naval Criminal Investigative Service (NCIS). The program and its characters were introduced in a two-part episode during the eleventh season of the television series NCIS on March 25 and April 1, 2014. NCIS: New Orleans was renewed for a sixth season on April 22, 2019, which premiered on September 24, 2019. On May 6, 2020, NCIS: New Orleans was renewed for the seventh season, which premiered on November 8, 2020. On February 17, 2021, it was announced that the seventh season will be the series' final season.
Title: NCIS: Los Angeles (season 11)
Content:  NCIS: Los Angeles was renewed for an eleventh season on April 22, 2019. In March 2020, CBS announced that the season's production had been delayed due to the COVID-19 pandemic. As a consequence of this, season eleven's episode order was reduced from 24 to 22.
Title: NCIS: Los Angeles (season 13)
Content:  On May 19, 2021, it was announced that the series would keep its Sunday 9:00 PM ET timeslot. The series continues to air after The Equalizer and leads into SEAL Team. On July 12, 2021, it was revealed that the season would premiere on October 10, 2021.
Title: NCIS: Los Angeles (season 6)
Content:  NCIS: Los Angeles premiered on September 29, 2014. NCIS: Los Angeles moved from a previous timeslot Tuesday at 9:00pm to a Monday timeslot at 10:00pm.
Title: NCIS: Los Angeles (season 11)
Content:  The eleventh season of NCIS: Los Angeles an American police procedural drama television series, premiered on CBS on September 29, 2019, and concluded on April 26, 2020. Only 22 episodes were produced due to the COVID-19 pandemic in the United States. The season is produced by CBS Television Studios.
Title: NCIS: Los Angeles (season 10)
Content:  NCIS: Los Angeles was renewed for a 24-episode tenth season on April 18, 2018.
Title: NCIS: Los Angeles (season 4)
Content:  NCIS: Los Angeles was renewed for a fourth season on March 14, 2012. In November 2012, NCIS: Los Angeles was introduced in an upcoming spin-off titled NCIS: Red. Written and produced by Shane Brennan, the series would follow "a mobile team of agents who live and work together as they go across the country to solve crimes". The pilot episodes, titled "Red" and "Red-2", which aired on March 19 and March 26, 2013, during the fourth season of the series. On May 15, 2013, it was announced that NCIS: Red would not be picked up to series by CBS.

Question: when do new episodes of ncis los angeles return?
Answer: May 13, 2018.
October 1, 2017.