Here's what will be airing on TNT New Years Eve and New Years Day, all times Eastern:

December 31st (New Year's Eve):

6am-Charmed: "P3 H2O" (S2E8, OAD: December 9, 1999)
7am-Charmed: "Ms. Hellfire" (S2E9, OAD: January 13, 2000)
8:01am-Charmed: "Heartbreak City" (S2E10, OAD: January 20, 2000)
9:02am-Charmed: "Reckless Abandon" (S2E11, OAD: January 27, 2000)
10:03am-Cold Case: "The Hitchhiker" (S1E10, OAD: December 21, 2003)
11:04am-Cold Case: "Hubris" (S1E11, OAD: January 11, 2004)
12:05pm-San Andreas (RD: May 29, 2015)
2:35pm-Twister (RD: May 10, 1996)
4:35pm-Independence Day (RD: July 3, 1996)
8:05pm-Avengers: Endgame (RD: April 26, 2019)
12am-Twister (RD: May 10, 1996)
2am-Cold Case: "Pin Up Girl" (S6E9, OAD: November 23, 2008)
3am-Cold Case: "Street Money" (S6E10, OAD: November 30, 2008)
4am-Cold Case: "Wings" (S6E11, OAD: December 21, 2008)
5am-Charmed: "Awakened" (S2E12, OAD: February 3, 2000)

January 1st (New Years Day):

6am-Charmed: "Animal Pragmatism" (S2E13, OAD: February 10, 2000)
7am-Charmed: "Pardon My Past" (S2E14, OAD: February 17, 2000)
8am-Charmed: "Give Me a Sign" (S2E15, OAD: February 24, 2000)
9am-Charmed: "Murphy's Luck" (S2E16, OAD: March 30, 2000)
10am-Captain Marvel (RD: March 8, 2019)
12:30pm-The Flash (RD: June 16, 2023)
3:30pm-Avengers: Endgame (RD: April 26, 2019)
7:30pm-Aquaman (RD: December 21, 2018)
10:30pm-Captain Marvel (RD: March 8, 2019)
1am-FBI: "This Land Is Your Land" (S1E8, OAD: November 20, 2018)
2am-FBI: "Compromised" (S1E9, OAD: December 4, 2018)
3am-FBI: "The Armorer's Faith" (S1E10, OAD: December 11, 2018)
4am-FBI: "Identity Crisis" (S1E11, OAD: January 15, 2019)
5am-FBI: "A New Dawn" (S1E12, OAD: January 22, 2019)