1) World Athletic Championships finals, 9-11 p.m., NBC (also, 2-3 p.m. ET). This massive track-and-field event (shown here) assembled more than 1,900 athlete (including 42 who had won individual Olympic gold medals) from 192 countries. It’s mostly been on the USA Network and Peacock, but jumps to NBC on weekends. Now we lead up to Sunday’s finish.
2) “Saturday Night Live,” 11:29 p.m., NBC. A decade after leaving “SNL,” Will Forte had his first turn as host, with Maneskin as music guest. Originally a writer, Forte spent eight years with the show, struggling at first with performances. He scored with the “MacGruber” character, which later was turned into a failed movie and now a Peacock series. He’s gone on to do lots of voice work and to produce and star in “Last Man on Earth.”
3) “Shark Fest,” National Geographic. The second week ends, as a competitor nears. On Sunday, Discovery starts its “Shark Week”; for tonight, “Fest” has the waters to itself. It has various versions (old, new, re-assembled) of “When Sharks Attack,” from 9 a.m. to an 8 p.m. hour about great whites. That’s followed by a “Jaws vs. Boats” sequel at 9 and then reruns – a search for the world’s largest hammerhead at 10, “Shark Queens” at 11.
4) “Flowers in the Attic: The Origins,” 8-10:03 p.m., Lifetime. The first two movies rerun at 4 and 6 p.m.., taking Olivia from a bright and optimistic businesswoman to the cold matriarch of a troubled family. Now she finds her son and daughter both in forbidden relationships. This reruns at midnight, after a much lighter film, the good-hearted (and true) “Jailbreak Lovers.”
5) More movies. “Rebel Without a Cause” (1955) offers broodingly perfect work from James Dean, Sal Mineo, Natalie Wood and more. That’s at 8 p.m. ET on Turner Classic Movies; on the flip side, there are lots of cartoons – all day on Freeform and “The Bob’s Burgers Movie,” at 8 on HBO.