1:30 pm: Fiesta

The San Fernando Valley celebrates its historical legacy with the 4th Sesquicentennial Celebration of the Treaty of Cahuenga. The authentic fiesta reenacts the signing of the 1847 Campo de Cahuenga Treaty, which ended the Mexican-American War in California and paved the way for California and the Western states to join the Union. The festive event will feature historic dance performances, a memorial wreath dedication, authentically dressed actors reenacting the treaty signing and refreshments. It takes place at Fremont-Pico Park at Campo de Cahuenga in North Hollywood.

* 4th Sesquicentennial Celebration of the Treaty of Cahuenga, Fremont-Pico Park at Campo de Cahuenga, 3919 Lankershim Blvd., North Hollywood, 1:30-3:30 p.m. (818) 762-3998.

7 pm: Family

The Peking Acrobats, China’s acclaimed troupe of tumblers, contortionists, jugglers, cyclists, gymnasts and musicians, return with another theatrical spectacular.

* The Peking Acrobats, Alex Theatre, 216 N. Brand Blvd., Glendale, 7 p.m. $15 to $35. (800) 233-3123.

2 pm: Music

The Concord Ensemble, an award-winning male vocal sextet based in Bloomington, Ind., sings a program of Renaissance and Baroque music in its first Southern California appearance, in Malibu. The group’s program is titled “The Victory of Santiago: Voices of Renaissance Spain.”

* The Concord Ensemble, Raitt Recital Hall, Pepperdine University, 24255 Pacific Coast Highway, Malibu, 2 p.m. $20. (310) 456-4556.

2 pm: Movies

UCLA Film and Television Archive opens its year 2000 Kids’ Flicks series with two of beloved actor-comedian Danny Kaye’s most delightful films: “Hans Christian Andersen,” in which Kaye plays the title role of the Danish writer of fairy stories, and “The Court Jester,” a satire on the swashbuckler genre. Kaye plays a jester turned jouster, Basil Rathbone is his nemesis and Glynis Johns and Angela Lansbury are the damsels in distress.

* Kids’ Flicks, James Bridges Theater, UCLA, nearest cross streets are Sunset Boulevard and Hilgard Avenue, Westwood. “Hans Christian Andersen” and “The Court Jester,” 2 p.m. $4 to $6. (310) 206-FILM.

5 pm: Theater

“The Kiss at City Hall,” the new comedy by Joe DiPietro (“I Love You, You’re Perfect, Now Change”) about the nature of love and truth, makes its West Coast premiere.

* “The Kiss at City Hall,” Pasadena Playhouse, 39 S. El Molino Ave., Pasadena, 5 p.m. Regular schedule: Tuesdays through Fridays, 8 p.m.; Saturdays, 5 and 9 p.m.; Sundays, 2 and 7 p.m. Ends Feb. 20. $13.50 to $42.50. (800) 233-3123.

7 pm: Pop Music

The annual Sno-Core tour links hard-rock sounds to the thrill of extreme winter sports. This year’s lineup is headed by L.A. band-on-the-rise System of a Down, supported by Incubus, Mr. Bungle and Puya.

* Sno-Core 2000 tour with System of a Down, Incubus, Mr. Bungle and Puya, Sun Theatre, 2200 E. Katella Ave., Anaheim, 7 p.m. $21. (714) 712-2700. Also Wednesday at the Ventura Theatre, 26 S. Chestnut St., Ventura, 8 p.m. $20. (805) 639-3965. Next Thursday at the Hollywood Palladium, 6215 Sunset Blvd., 7 p.m. $20. (323) 962-7600.

FREEBIE

Loyola Marymount University’s Sinatra Opera Workshop and other Department of Music ensembles will perform free concerts for children at 2 and 7:30 p.m. in Murphy Recital Hall on campus, 7900 Loyola Blvd., Westchester. (310) 338-5386.