We have changed how we collect and accept calendar information. Readers must now submit all items through our website. Go to events.contracostatimes.com. Click on "submit your event." You'll have to register at this point and enter your event. You do not have to pay. Submitting your event in this way will ensure it is part of our easily searchable online database as well as a candidate for space in our publications.

Jack London Square Lights Up the Holidays. Start the festive holiday season with an annual family tree lighting ceremony on the waterfront featuring holiday musical entertainment, live reindeer, world-traveling tap dancing Christmas trees, costumed characters, float and more. 5 to 7:30 p.m. Dec. 6. Jack London Square, Broadway and Embarcadero, Oakland. Free. www.jacklondonsquare.com.

Boys & Girls Club Diamond Jubilee. Celebrate the 75th anniversary of the Boys & Girls Club of Oakland with an evening of music, dinner, dancing, auction and a look at the history and future of the program with National Trustee George Zimmer. 6 p.m. Dec. 6. $200. Marriott Oakland City Center, 1001 Broadway, Oakland. 510-444-8211, www.bgcoakland.org.

Star of Wonder Concert. An annual tradition celebrating the glory of Christmas, State of Wonder features glorious music of the season plus new Christmas compositions by Stephen Main, the opportunity to sing your favorite carols with the orchestra, and a reception with the musicians. 7 p.m. Dec. 6 and Dec. 8. Reception follows. Piedmont Community Church, 400 Highland Ave., Piedmont. $30. 510-547-5700, piedmontchurch.org


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Children's Holiday Parade. The 14th annual America's Children's Holiday Parade brings together children's characters, floats, giant balloons, terrific marching bands and entertainment. The parade marches through the streets of downtown Oakland beginning at 11th Street and ending at Lake Merritt. Website provides exact route. 2 p.m., Dec. 7. Downtown Oakland, Broadway and environs.

Americas-holiday-parade.com.