Passage: On June 18, 1975, NBC launched the NBC News and Information Service (NIS), which provided up to 55 minutes of news per hour around the clock to local stations that wanted to adopt an all-news radio format. NBC carried the service on WRC in Washington, and on its owned-and-operated FM stations in New York City, Chicago and San Francisco. NIS attracted several dozen subscribing stations, but by the fall of 1976, NBC determined that it could not project that the service would ever become profitable and gave its affiliates six months' notice that it would be discontinued. NIS ended operations on May 29, 1977. In 1979, NBC launched The Source, a modestly successful secondary network providing news and short features to FM rock stations.The NBC Radio Network also pioneered personal advice call-in national talk radio with a satellite-distributed evening talk show, TalkNet; the program featured Bruce Williams (providing personal financial advice), Bernard Meltzer (personal and financial advice) and Sally Jessy Raphael (personal and romantic advice). While never much of a ratings success, TalkNet nonetheless helped further the national talk radio format. For affiliates, many of them struggling AM stations, TalkNet helped fill evening time slots with free programming, allowing the stations to sell local advertising in a dynamic format without the cost associated with producing local programming. Some in the industry feared this trend would lead to increasing control of radio content by networks and syndicators.

Question: when did  the NBC launch the NBC news?
June 18, 1975