Passage: In its original American broadcast on October 15, 2009, "Sister City" was seen by 4.69 million household viewers, according to Nielsen Media Research. It was a drop from the previous week's episode, "Practice Date". "Sister City" received a 2.0 rating/6 share among viewers aged between 18 and 49. The episode received generally positive reviews. Entertainment Weekly writer Henning Fog said "Sister City" continued a trend of excellence in the second season that has established Parks and Recreation as NBC's best comedy. Fog said the episode also further expanded its characters, by showing Leslie is not a complete pushover and Tom is a kind person.Salon.com writer Heather Havrilesky called the episode an "instant classic", and particularly praised the guest performance of Fred Armisen. She said the episode "benefits from the show's writers' increasing habit of giving everything from political scandals to lame local events the Onion treatment". Alan Sepinwall of The Star-Ledger said it was "another strong one", and said the Leslie character is growing less clueless and more three-dimensional. Robert Philpot of the Fort Worth Star-Telegram said he believed the show still too closely resembled The Office, but that "Sister City" "showed that Parks and Recreation can equal The Office for comic discomfort". Fowler of IGN said the anti-American sentiment demonstrated by the Venezuelan delegation "was a funny twist that didn't completely wear itself out, although it came close". Fowler particularly praised Armisen, who he said risked overshadowing the regular cast, and the sardonic comedy of Plaza. Not all reviews were positive. The A.V. Club writer Leonard Pierce, who said he felt the second season had been excellent so far, described "Sister City" as "easily the weakest episode of the season, maybe the series". Pierce called the political overtones "ham-handed", the humor was too over-the-top, and the episode suffered from the absence of most of the supporting cast.

Question: When did Sister City premier?
October 15, 2009