Where They Once Were: A talk on major battles of the Korean War. [5 p.m. Korean War Veterans Memorial, National Mall] Octopus Feeding: Learn about the giant Pacific octopus and its dynamic hunting behaviors. [11 a.m. National Zoo, 3001 Connecticut Ave., N.W.] Thomas B. Allen: Author and historian discusses the Tories and the revolutionary period. [12 p.m. Spy Museum, 800 F St., N.W.]

Julie Dexter: The acclaimed classic soul singer-songwriter performs. [10 p.m. Blues Alley, 1073 Wisconsin Ave., N.W.]

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