Nag Panchami is a Hindu festival celebrated in India and Nepal. It falls on the fifth day of the bright half of the lunar month of Shravan (usually in July or August). The festival is dedicated to the worship of snakes, which are considered divine creatures in Hindu mythology.

On this day, people offer milk, sweets, flowers, and other offerings to live snakes or snake idols in temples. The worship is believed to bring good luck and protection from snake bites. The festival is especially important in regions where snakes are common, as it is believed that worshiping them helps to avoid their anger.

In some parts of India, people also observe fast on Nag Panchami and visit temples dedicated to the snake god, Nag. The festival is also associated with various legends and myths related to snakes, such as the story of Lord Krishna defeating the serpent Kalia in the Yamuna River.