What is the first day of pongal known as?

The first day of Pongal is known as Bhogi. It is celebrated in honor of Lord Indra, the god of rain and clouds, and is considered to be an auspicious day for starting new beginnings, such as the beginning of the harvest season or the start of a new business venture. On this day, people clean their homes and discard old and unwanted items, symbolizing the removal of negativity and welcoming new positive energy into their lives. They also light bonfires and offer prayers to Lord Indra for his blessings.