Uttar Pradesh Day, also known as Uttar Pradesh Diwas or UP Diwas, is observed in India on January 24 each year. This day commemorates the renaming of the United Provinces of Agra and Oudh to Uttar Pradesh in 1950. The celebration was proposed by Ram Naik, the 24th Governor of Uttar Pradesh, in 2017, and it has since been recognized as a holiday. The day is marked by various festive events that celebrate the cultural heritage and traditions of Uttar Pradesh, the most populous state in India, which is home to about 200 million people. The capital of Uttar Pradesh is Lucknow, which became the province's capital in 1920. While Uttar Pradesh Day is an official holiday, it is not a non-working holiday unless it coincides with a weekend.