LOS ANGELES — NBC will make Thursday an all-comedy night and move its two “Law & Order” dramas as part of a midseason shake-up.

The network announced Monday that it is shifting “30 Rock” and the freshman series “Outsourced” to the final hour of prime time starting Jan. 20. The rest of the night’s lineup, starting at 8 p.m. ET, will include “Community,” newcomer “Perfect Couples,” ”The Office” and returning series “Parks and Recreation.”

Tina Fey’s “30 Rock” has been renewed through the 2011-12 season, NBC also announced.

In January, “Law & Order: Special Victims Unit” is moving up an hour, to 10 p.m. ET Wednesday, from its current 9 p.m. ET Wednesday home. In February, “Law & Order: Los Angeles,” which now airs on Wednesday, will move to 10 p.m. ET Tuesday.