The culminating night of the Democratic National Convention (PBS, CNN, CSPAN, MSNBC, 8 p.m.; ABC, NBC, 9 p.m.; CBS, NBC, 10 p.m.) in Chicago will allow viewers to hear more from the its presidential nominee Kamala Harris in her acceptance speech. Joy, yes, and maybe even be a balloon drop. 

David Attenborough narrates the documentary film “Secret Lives of Orangutans” (Netflix, streaming.

The relentlessly unfunny “That’ ‘90s Show” (Netflix, streaming) begins its third season. 

From the UK comes “Fifteen-Love” (Sundance Now, streaming), which is that rare thing, a tennis drama, starring Ella Lily Ryland and Aidan Turner. 

“Alone Australia” (History, 9:30 p.m.) closes its inaugural season by crowning a $250,000 winner.

A live eviction follows the AI Challenge on “Big Brother” (CBS, 8 p.m.). Other games tonight include “Press Your Luck” (ABC, 8 p.m.). 

Chrissy Metz is guest on “Beat Bobby Flay” (Food, 9 p.m.). 

“The Real Housewives of Orange County” (Bravo, 9 p.m.) bond over divorce. 

The river begins to freeze on “Alone” (History, 8 p.m.).

“Lost Treasures of Rome” (National Geographic, 9 p.m.) goes digging in Pompeii. 

Briana plans a family photoshoot on “Teen Mom: The Next Chapter” (MTV, 8 p.m.). 

“Outchef’d” (Food, 9:30 p.m.) has a wild mushroom throwdown. 

Chanel fights to get into the VMAs on “The West Coast Hustle” (MTV, 9 p.m.). 

Bette Davis is a natural for Turner Classic Movies’ Summer Under the Stars with a full day of films: “A Cabin in the Cotton” (6 a.m.), “Front Page Woman” (7:30 a.m.), “Dangerous” (9 a.m.), “Marked Woman” (10:30 a.m.), “The Catered Affair” (12:15 p.m.), “Dark Victory” (2 p.m.), “The Great Lie” (4 p.m.), “The Little Foxes” (6 p.m.), “Another Man’s Poison” (8 p.m.), “The Letter” (10 p.m.), “Deception” (midnight), “Dead Ringer” (2 a.m.) and “The Nanny” (4 a.m.). 

Baseball includes Phillies at Braves (Fox, 7 p.m.).

Preseason football has Indianapolis at Cincinnati (Prime Video, 8 p.m.) and Chicago at Kansas City (NFL, 8 p.m.). 

Daytime Talk

Kelly Ripa and Mark Consuelos: Ariana DeBose, Cole Sprouse, Danai Gurira, Jess Sims. The View: Michigan Gov. Gretchen Whitmer, Jenn Tran (rerun). Drew Barrymore: Reba McEntire (rerun). Kelly Clarkson: Jean Smart, Nicholas Galitzine (rerun). Jennifer Hudson: Sherri Shepherd (rerun). Tamron Hall: Frankie Grande, K. Daniels (rerun). 

Late Talk 

Stephen Colbert: Rep. Alexandria Ocasio-Cortez, Mavis Staples, Jeff Tweedy. Jimmy Kimmel: Bill Skarsgård, FKA Twigs, Gabby Thomas, Pepe Aguilar, RuPaul. Jimmy Fallon: Zoé Kravitz, Sabrina Carpenter. Seth Meyers: Amy Poehler, Fred Armisen, Bob Mould. Taylor Tomlinson: Anna Faris, Melissa Villaseñor, Andy Richter (rerun). Daily Show: Jon Stewart.