Which city is the capital of India for one day?

Allahabad, also known as Prayagraj, is a city located in the northern Indian state of Uttar Pradesh. It holds a significant place in India's history and culture, as it was once the capital of the country during the British Raj. In 1858, after the Indian Rebellion of 1857, the British government transferred the capital of India from Kolkata to Allahabad for a brief period of time. During this time, Allahabad became a hub for administrative, political, and cultural activities, and several significant events such as the formation of the Indian National Congress took place here. Today, Allahabad is known for its rich history, beautiful temples, and the Kumbh Mela, the world's largest religious gathering that takes place once every twelve years.