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Pier Centennial, September 9, 3-10pm, free, Santa Monica Pier, santamonicapier.orgThe Pier’s 100th birthday will be celebrated with a Grand Re-opening ceremony with music, local and state government officials, celebrities, special guests Robert Redford and Joan Baez, and a cake-cutting ceremony. Later on, at night, fireworks will light the sky over the ocean.Sustainable Works Fundraiser, September 10, 6-11pm, $5-$20, Writers Boot Camp, Bergamot Station, 2525 Michigan Ave., sustainableworks.org.The second annual fundraiser for this environmental organization will feature comedian Jake Johannsen as host, and a silent auction with prizes including a signed Shepard Fairey poster and two nights at the Sheraton Delfina Hotel.