Here's what will be airing on Comedy Central on Flag Day, all times Eastern:

6am-South Park: "Raisins" (S7E14, OAD: December 10, 2003)
6:30am-South Park: "Good Times with Weapons" (S8E1, OAD: March 17, 2004)
7am-South Park: "Awesom-O" (S8E5, OAD: April 14, 2004)
7:30am-South Park: "Up the Down Steroid" (S8E2, OAD: March 24, 2004)
8am-Parks and Recreation: "Leslie vs. April" (S5E7, OAD: November 15, 2012)
8:30am-Parks and Recreation: "Pawnee Commons" (S5E8, OAD: November 29, 2012)
9am-Parks and Recreation: "Ron and Diane" (S5E9, OAD: December 6, 2012)
9:30am-Parks and Recreation: "Two Parties" (S5E10, OAD: January 17, 2013)
10am-Parks and Recreation: "Women in Garbage" (S5E11, OAD: January 24, 2013)
10:30am-Parks and Recreation: "Ann's Decision" (S5E12, OAD: February 7, 2013)
11am-Grown Ups (RD: June 25, 2010)
1pm-Happy Gilmore (RD: February 16, 1996)
3pm-Seinfeld: "The Chaperone" (S6E1, OAD: September 22, 1994)
3:30pm-Seinfeld: "The Big Salad" (S6E2, OAD: September 29, 1994)
4pm-Seinfeld: "The Pledge Drive" (S6E3, OAD: October 6, 1994)
4:30pm-Seinfeld: "The Chinese Woman" (S6E4, OAD: October 13, 1994)
5pm-Seinfeld: "The Couch" (S6E5, OAD: October 27, 1994)
5:30pm-Seinfeld: "The Gymnast" (S6E6, OAD: November 3, 1994)
6pm-Seinfeld: "The Soup" (S6E7, OAD: November 10, 1994)
6:30pm-Seinfeld: "The Mom & Pop Store" (S6E8, OAD: November 17, 1994)
7pm-Seinfeld: "The Secretary" (S6E9, OAD: December 8, 1994)
7:30pm-Seinfeld: "The Race" (S6E10, OAD: December 15, 1994)
8pm-Seinfeld: "The Switch" (S6E11, OAD: January 5, 1995)
8:30pm-Seinfeld: "The Scofflaw" (S6E13, OAD: January 26, 1995)
9pm-Family Guy: "V Is for Mystery" (S16E13, OAD: March 25, 2018)
9:30pm-Family Guy: "Veteran Guy" (S16E14, OAD: April 1, 2018)
10pm-Family Guy: "The Woof of Wall Street" (S16E15, OAD: April 8, 2018)
10:30pm-Family Guy: "'Family Guy' Through the Years" (S16E16, OAD: April 22, 2018)
11pm-Family Guy: "Switch the Flip" (S16E17, OAD: April 29, 2018)
11:30pm-Family Guy: "HTTPete" (S16E18, OAD: May 6, 2018)
12am-Family Guy: "The Unkindest Cut" (S16E19, OAD: May 13, 2018)
12:30am-South Park: "The Passion of the Jew" (S8E3, OAD: March 31, 2004)
1am-South Park: "You Got F'd in the A" (S8E4, OAD: April 7, 2004)
1:30am-South Park: "Goobacks" (S8E7, OAD: April 28, 2004)
2am-South Park: "The Jeffersons" (S8E6, OAD: April 21, 2004)
2:30am-South Park: "Douche and Turd" (S8E8, OAD: October 27, 2004)
3am-South Park: "Preschool" (S8E10, OAD: November 10, 2004)
3:30am-South Park: "Quest for Rating" (S8E11, OAD: November 17, 2004)
4am-South Park: "Stupid Spoiled Whore Video Playset" (S8E12, OAD: December 1, 2004)
4:30am-South Park: "Cartman's Incredible Gift" (S8E13, OAD: December 8, 2004)
5am-South Park: "Die Hippie, Die" (S9E2, OAD: March 16, 2005)
5:30am-South Park: "Wing" (S9E3, OAD: March 23, 2005)