LOS ANGELES (CBS) — Southland residents are celebrating Martin Luther King Jr. Day just one day after the civil rights activist would have turned 83 years old.

Thousands are expected to spend the day fixing up schools, helping veterans and planting trees.

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The 27th Annual Kingdom Day Parade, which starts at Western Avenue and Martin Luther King Boulevard, also kicked off at 11 a.m.

Roughly 30 marching bands, 23 drill teams and 20 floats will travel the parade route, which heads west on Martin Luther King to Crenshaw Boulevard, then south to Vernon Avenue before concluding at Leimert Park.

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All federal, state, county and city offices, as well as post offices, schools and banks, will be closed.

Metrolink trains, buses and subways, however, are all running on their regular schedules.

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Roughly 200,000 documents relating to Martin Luther King Jr. are also available to view online through the King Center Imaging Project.