When the AIADMK was in power, the then Chief Minister Edappadi K. Palaniswami announced that November 1 would be celebrated as Tamil Nadu Day. However, after the DMK came to power in 2021, it changed the observance to July 18 When the AIADMK was in power, the then Chief Minister Edappadi K. Palaniswami announced that November 1 would be celebrated as Tamil Nadu Day. However, after the DMK came to power in 2021, it changed the observance to July 18