Question: When is Celebrity Big Brother coming to the network which, along with ABC and the network which aired Law of the Plainsman, is the other major broadcaster based in NY?

Knowledge 1: Law of the Plainsman
Law of the Plainsman is a Western television series starring Michael Ansara that aired on the NBC television network from October 1, 1959, until May 5, 1960. [SEP] Knowledge 2: New York City
The television industry developed in New York and is a significant employer in the city's economy. The three major American broadcast networks are all headquartered in New York: ABC, CBS, and NBC. Many cable networks are based in the city as well, including MTV, Fox News, HBO, Showtime, Bravo, Food Network, AMC, and Comedy Central. The City of New York operates a public broadcast service, NYCTV, that has produced several original Emmy Award-winning shows covering music and culture in city neighborhoods and city government. [SEP] Knowledge 3: Celebrity Big Brother (American TV series)
The main television coverage of Celebrity Big Brother was screened on CBS during the winter of the 2017 -- 18 network television season. CBS decided to schedule the spin - off during the February 2018 sweeps period to counterprogram NBC's coverage of the 2018 Winter Olympics. Episodes aired on Sundays, Mondays, Wednesdays, and Fridays with two special episodes on Thursday, February 8 and Saturday, February 24. All episodes aired for one hour and aired from 8: 00 - 9: 00 p.m. EST; the Friday episodes and the season finale, however, ran for two hours each (from 8: 00 - 10: 00 p.m. EST). The live Internet feeds returned for the American version of Celebrity Big Brother as part of CBS All Access. Alongside the weekly shows on CBS, the companion series Big Brother: After Dark returned on Pop under the title Celebrity Big Brother: After Dark. The show provided live coverage nightly from inside the House.
Knowledge 1: Law of the Plainsman
Law of the Plainsman is a Western television series starring Michael Ansara that aired on the NBC television network from October 1, 1959, until May 5, 1960. [SEP] Knowledge 2: New York City
The television industry developed in New York and is a significant employer in the city's economy. The three major American broadcast networks are all headquartered in New York: ABC, CBS, and NBC. Many cable networks are based in the city as well, including MTV, Fox News, HBO, Showtime, Bravo, Food Network, AMC, and Comedy Central. The City of New York operates a public broadcast service, NYCTV, that has produced several original Emmy Award-winning shows covering music and culture in city neighborhoods and city government. [SEP] Knowledge 3: Big Brother (American TV series)
The series currently has two spin - offs: Big Brother: Over The Top, which was the first reality game show to air exclusively on a streaming platform airing in Fall 2016 on CBS's streaming service, CBS All Access; and Celebrity Big Brother, set to air on CBS in early 2018.
Knowledge 1: Law of the Plainsman
Law of the Plainsman is a Western television series starring Michael Ansara that aired on the NBC television network from October 1, 1959, until May 5, 1960. [SEP] Knowledge 2: New York City
The television industry developed in New York and is a significant employer in the city's economy. The three major American broadcast networks are all headquartered in New York: ABC, CBS, and NBC. Many cable networks are based in the city as well, including MTV, Fox News, HBO, Showtime, Bravo, Food Network, AMC, and Comedy Central. The City of New York operates a public broadcast service, NYCTV, that has produced several original Emmy Award-winning shows covering music and culture in city neighborhoods and city government. [SEP] Knowledge 3: Celebrity Big Brother (American TV series)
Celebrity Big Brother also known as Big Brother: Celebrity Edition is a spin - off series of the American reality television series Big Brother. This season will air during the winter of the 2017 -- 18 network television season on CBS and will be the second U.S. Big Brother season to air outside the usual summer television season, the first being Big Brother 9 in 2008. Julie Chen will return as host, with Allison Grodner and Rich Meehan returning as executive producers. The season will be produced by Fly on the Wall Entertainment in association with Endemol Shine North America. CBS announced that the series is set to premiere on February 7, 2018 and conclude on February 25, 2018.

Answer: February 7, 2018