Question: When did the television series of which "Pinkeye" is an episode started?
Context: "Scorched" is the 11th episode of the second season of the American television series "Numb3rs".  Marking the first produced script for series writer Sean Crouch, the episode features Federal Bureau of Investigation (FBI) agents and mathematicians investigating a series of arsons that may have been started by an ecoterrorist group.  Bill Nye "The Science Guy", who is a fan of the show, guest stars as a colleague of scientists Dr. Charlie Eppes (David Krumholtz) and Dr. Larry Fleinhardt (Peter MacNicol). Case Histories is a British crime drama television series based on the Jackson Brodie novel series by Kate Atkinson.  It stars Jason Isaacs, who had also narrated the abridged audiobook adaptation, as protagonist Jackson Brodie.  The series is both set and filmed in Edinburgh.  The first series premiered on June 5, 2011, on BBC1 in the United Kingdom, and in October 2011 on PBS in the United States.  A second series aired in 2013.  Initially commissioned as two feature-length episodes, in September 2012, the BBC reported that the format of series two would be different, encompassing three stories, each self-contained, at a running time of ninety minutes per episode.  The first episode was revealed to be an adaptation of Atkinson’s novel "Started Early, Took My Dog".  Filming for the second series commenced in October 2012.  The second and third episodes of the series are original stories, written exclusively for television. This is a list of episodes for the Japanese anime military science fiction television series "Space Battleship Yamato 2199".  It is a remake of the first "Space Battleship Yamato" television series created by Yoshinobu Nishizaki in 1974, known in the United States as "Star Blazers".  The first episode aired on April 6, 2012, on Family Gekijo channel.  The series is being screened back-to-back in theaters across Japan, a few episodes at a time prior to release on home video, and started airing on television on April 7, 2013.  The series is confirmed to be marketed internationally under the name "Star Blazers 2199". "Pinkeye" is the seventh episode in the first season of the American animated television series "South Park".  It originally aired on Comedy Central in the United States on October 29, 1997.  In "Pinkeye", Kenny is killed and, through a freak accident, he is brought back to life as a zombie and starts terrorizing South Park residents, who believe the rise of the living dead is an epidemic of "pinkeye". "The Erlenmeyer Flask" is the 24th episode and the first season finale of the science fiction television series "The X-Files".  Written by executive producer Chris Carter, and directed by R. W. Goodwin, the episode continues with the mythology story arc which started with "Pilot".  The episode first aired in the United States on May 13, 1994 on the Fox network.  With 8.3 million households turning in during its initial broadcast, the episode was the most-viewed episode of the show's first season.  The episode received an Edgar Award nomination in the Best Episode in a TV Series category, and has, since broadcast, received positive responses from both critics and crew members. "Terra Prime" is the 21st episode of the of the American science fiction television series "", and originally aired on May 13, 2005.  The story was developed by Judith and Garfield Reeves-Stevens, along with André Bormanis, and developed into a script by the Reeves-Stevenses and show runner Manny Coto.  The episode is the second of a two-part story, which started in "".  The episode was directed by Marvin Rush, his second for the series. The first season of the animated television series "South Park" ran for 13 episodes from August 13, 1997 to February 25, 1998 on the American network Comedy Central.  The creators Trey Parker and Matt Stone wrote most of the season's episodes; Dan Sterling, Philip Stark and David Goodman were credited with writing five episodes.  The narrative revolves around four children—Stan Marsh, Kyle Broflovski, Eric Cartman and Kenny McCormick—and their unusual experiences in the titular mountain town. "Movin' Out (Brian's Song)" is the second episode of the sixth season of the American animated television series "Family Guy".  The 100th overall, it originally aired on Fox in the United States on September 30, 2007.  It was written by John Viener and directed by Cyndi Tang.  In the episode, Peter convinces Brian to move in with his girlfriend Jillian and Stewie tags along to help pay the rent.  Meanwhile, Meg and Chris get jobs at the convenience store where Chris befriends the manager, prompting Meg to do all the hard work.  The episode title is a reference to the Billy Joel song "Movin' Out (Anthony's Song)" and the film "Brian's Song".  This episode marks the end of Brian and Jillian's relationship, which started in season five. "Jail Break" is the fifty-second and final episode of the first season of American animated television series "Steven Universe", which premiered on March 12, 2015 on Cartoon Network.  The episode was written and storyboarded by Joe Johnston, Jeff Liu, and series creator Rebecca Sugar.  The episode acts as a continuation of the arc started in the previous episode, "The Return", and the two aired alongside each other as a two-part special.  Both episodes were watched by 1.697 million viewers. "Awakening" is the eighth episode of the fourth season of the American science fiction television series "", and originally aired on November 26, 2004 on UPN.  The script was written by André Bormanis and the episode was directed by "" alumni Roxann Dawson.  The episode was the first of the season for both Bormanis and Dawson.  The episode is the second of a three-part episode arc which started in "" and concludes in "Kir'Shara".
Answer: August 13, 1997