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Calendar

TAMPA BAY INTERNATIONAL AUTO SHOW: 10 a.m.-10 p.m., Tampa Convention Center, 333 S Franklin St., Tampa. $8 adults; $4 seniors, military, students, kids ages 7-12. Toll-free 1-800-426-5630 or www.motortrendautoshows.com/tampa

ZEPHYRHILLS FALL AUTOFEST: Racing 11 a.m.; car show 8 a.m.-3 p.m.; auction 9:30 a.m. Sat., Festival Park, U.S. 301, 3 miles south of Zephyrhills. $8, free kids ages 12 and younger. 813 258-6726, (813) 782-0835 or www.zephyrhillsfestivals.com

RIBFEST: Music by Gregg Rolie Band and Creedence Clearwater Revisited today; Corvette show noon-3 p.m.; 11 a.m.-11 p.m., Vinoy Park, Seventh Avenue NE, St. Petersburg. $10. 727 528-3828 or www.ribfest.org

HUDSON SEAFEST: Concert by Bertie Higgins and the Band of Pirates at 9 p.m., carnival and midway, arts and crafts, and fishing tournament. Gates open 11 a.m., USA Flea Market property on U.S. 19 near SR 52, Hudson. Free, $3 parking. (727) 847-8887.

SING-A-LONG WIZARD OF OZ: 2 and 7:30 p.m., Tampa Theatre, 711 Franklin St., Tampa. $15 adults, $10 seniors and students, $5 kids ages 12 and younger. 813 274-8981 or www.tampatheatre.org

TAMPA'S ANNUAL GREEK FESTIVAL: 11 a.m.-10 p.m., St. John's Greek Orthodox Church, Swann and Armenia avenues. $1 adults, free kids ages 11 and younger. Fee for food. (813) 876-8830.

FIVE CENTURIES OF THE MILITARY: Stories, demonstrations and exhibits, 9 a.m.-4 p.m., Pinellas Pioneer Settlement, 2900 31st St. S, St. Petersburg. $2 adults; $1 kids ages 6-15; free military personnel, veterans and kids 6 and younger. (727) 866-6401.

TONY HAWK'S BOOM BOOM HUCKJAM ARENA TOUR: Skateboarders, BMX bikers and motocross riders with live music, 7:30 p.m., St. Pete Times Forum, 401 Channelside Drive, Tampa. $26.75-$76.75. Free parents' waiting area available. 813 301-2500 or www.boomboomhuckjam.com

INDIA FESTIVAL 2002: Traditional Indian folk dances, entertainment competitions, food, music, vendors with saris, henna, jewelry and more, 1-10 p.m., USF Sun Dome, 4202 E Fowler Ave., Tampa. $6 adults, $3 kids 12 and younger. (813) 765-0066.

TAMPA STAMP AND COIN EXPO: 10 a.m.-6 p.m., Holiday Inn Express, 4732 N Dale Mabry Highway, Tampa. (727) 848-7697.

SHALLOW WATER FISHING EXPO: 9 a.m.-5 p.m., Pinellas Expo Center, 10601 U.S. 19 N, Pinellas Park. $10 adults, free kids 13 and younger. (727) 572-7100.

THE CHALLENGE: The Olsen twins star as estranged sisters on a reality show, 8 p.m., WFTS-Ch. 28.

JOHNNY CASH MEMORIAL TRIBUTE: 8 p.m., CMT.