SATURDAY Sun Valley Community Tree Giveaway, 9 a.m.-1 p.m., Waste Management Parking Lot, 9081 Tujunga Ave., Sun Valley. Call (818) 252-3106. Valley Livestock Show, 9 a.m., Hansen Dam Equestrian Center, 11127 Orcas Ave., Lake View Terrace. Chatsworth Business Improvement District’s Summerfest 2007, 11 a.m., Chatsworth Train Depot Station, 10038 Old Depot Plaza Road, Chatsworth. Free. Call (818) 341-2428. 160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set! SUNDAY Road Kings Picnic in the Park and Car Show, 8 a.m.-3 p.m., Johnny Carson Park, 400 S. Bob Hope Drive, Burbank. Call (818) 842-5464. Valley Livestock Show, 10 a.m., Hansen Dam Equestrian Center, 11127 Orcas Ave., Lake View Terrace. Playboy Jazz at Warner Ranch Park with Poncho Sanchez, 1:30-8 p.m., Lou Bredlow Pavilion, 21820 Califa Ave., Woodland Hills. Free. Mail Datebook entries – including time, date, location and phone number – to Daily News City Desk, P.O. Box 4200, Woodland Hills, CA 91365; fax (818) 713-0058; e-mail email@example.com.