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 aired during the winter of the 2017 -- 18 network television season on CBS and was 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 returned as host, with Allison Grodner and Rich Meehan returning as executive producers. The season was produced by Fly on the Wall Entertainment in association with Endemol Shine North America. The season premiered on February 7, 2018.

Answer this question based on the passage: when does big brother celebrity edition start 2018? OK. Let's think. My stream of consciousness:
To answer the above question, the relevant sentence is: The season premiered on February 7, 2018. The answer is February 7 , 2018.