The Globe's guide to what's worth it in L.A. this August

August 22 is the month's collision. That Saturday, a 17-day jazz festival that has been moving through Los Angeles parks reaches its final weekend at the beach, and a film that runs for a full 24 hours starts its clock at LACMA. You cannot do both. Here is what each one is.

The jazz festival's last weekend

The festival has spent 17 days in city parks, with free concerts along the way. It closes August 22 and 23 at Dockweiler Beach, and the closing lineup is the reason to plan around it: John Legend, Janelle Monáe, Parliament Funkadelic featuring George Clinton, and Raphael Saadiq. Dates and the rest of the month's slate are in Time Out's August calendar.

The Clock at LACMA

Christian Marclay's The Clock is a film assembled so that it tells the actual time, minute by minute, for 24 straight hours. LACMA is running it in full on August 22 as a specially ticketed screening, per Time Out. The overnight hours are the ones people talk about, and they are the hardest to get to, which is the whole appeal.

The quieter evenings

For the weeks on either side, We Like LA's running list is the one to keep open. Two picks from it: Sizzling Summer Nights at The Autry, and TAPE LA at Barnsdall Art Park.

The guide's standing rule holds this month: free, outdoors, and public beats expensive, indoors, and exclusive.