“30 Rock” is back for one night only—but it might be something people have to search for. Half of the U.S. NBC affiliates won’t show the scripted special on TV, but Liz Lemon fans can still catch the reunion online.

The 2020 “30 Rock” special is actually a special Upfront event, meaning that NBC is using it to highlight their other programming get advertisers to buy commercials across their channels and the streaming platform Peacock in the new TV season.

On TV, the “30 Rock” reunion will air Thursday at 8 p.m. EDT on NBC, and it'll be a commercial-free hour. It’ll also be rebroadcast on USA Network, Bravo, E!, Oxygen, SYFY, and CNBC on Friday, July 17 at 9 p.m. EDT.

It’ll air in 40% of the country--including New York and Los Angeles--on NBC, but other TV affiliates feel the special is meant to promote Peacock, driving audiences away from cable subscriptions, Vulture reports.

Those who can’t watch on TV on either NBC or NBC-owned cable networks can tune in online. Peacock launched this week with free, premium and ad-free premium options, and it already has all seven seasons of the sitcom, which ran from 2008 to 2013, available for streaming.

The “30 Rock” Upfront event isn’t a typical episode, but it will include the usual cast. Liz Lemon (Tina Fey), Jack Donaghy (Alec Baldwin), Tracy Jordan (Tracy Morgan), Jenna Maroney (Jane Krakowski) and Kenneth Parcell (Jack McBrayer) are confirmed to be on the special event. The team reunites to help Jack with a presentation for advertisers.

30 Rock reunion
The cast of "30 Rock" is pictured during the 2020 reunion special. NBC
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