 Indigenous Peoples' Day began in 1989 in South Dakota, where Lynn Hart and Governor George S. Mickelson backed a resolution to celebrate Native American day on the second Monday of October, marking the beginning of the year of reconciliation in 1990.It was instituted in Berkeley, California, in 1992, to coincide with the 500th anniversary of the arrival of Christopher Columbus in the Americas.Two years later, Santa Cruz, California, instituted the holiday, and in the 2010s, various other cities and states took it up.