Phoenix voted on Wednesday to officially declare the second Monday in October -- the same day as Columbus Day -- Indigenous Peoples' Day.
The Phoenix City Council unanimously approved the request which aims to celebrate Phoenix's indigenous community.
Phoenix is the largest city in the country to formally recognize the alternative celebration, joining 25 other cities including Seattle, Minneapolis and Denver. South Dakota and Vermont also honor Indigenous Peoples' Day statewide.
Alaska, Hawaii and Oregon have never recognized Columbus Day, though it became a federal holiday in 1937.
South Dakota also celebrates Native American Day in September, as does California and Nevada.