Pongal is celebrated mostly in South India over four days, by farmers who give thanks to 'Surya', the Sun God and giver of life, for the blessings of a rich harvest. On the second day, 'Surya Pongal', the Sun God is honoured. Every household cooks a pot of rice with milk to offer up to Surya at dawn. Pongal means to 'overflow', hence the pot of rice has to bubble over to symbolise prosperity and abundance. This is then served to members of the family as well as any visitors to the house. It is a very social period, as relatives and friends visit each other and exchange greetings.