India PM Modi, Union Minister Amit Shah greet people on Onam Updated : August 31, 2020 09:29 AM IST Onam is a harvest festival which is celebrated in Kerala. It is celebrated in the memory of legendary king Mahabali. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.