Ayyankali Jayanti is observed in Kerala, India, every August 28, commemorating the birthday of Mahatma Ayyankali, a prominent social reformer who championed the rights of the untouchable Pulayar community. Born in 1863 in the princely state of Travancore, Ayyankali fought against severe social discrimination and oppression faced by his community. He is known for his acts of rebellion, such as traveling on a road in an ox cart, which was prohibited for Pulayars. His efforts led to significant changes, including the right for untouchables to access most roads in Travancore by 1900 and the establishment of schools for Pulayars. Ayyankali founded the Sadhujana Paripalana Sangham to improve educational access, and his initiatives were supported by both Hindus and Christians. The holiday is marked by ceremonies in Thiruvananthapuram, where officials and Ayyankali's descendants honor his legacy at his monument.