Giovardhan Puja is performed on the fourth day of Padwa and it is also a day of Diwali celebration. The festival is celebrated to commemorate the lifting ofMount Govardhan by Lord Krishna.
According to mythology, people of Gokul used to celebrate a festival in honour of Lord Indra and worshipped him after the end of every monsoon season. But Krishna wanted to stop this feast. When Lord Indra came to know about this, he became very angry and sent a deluge to submerge Gokul. People of Gokul were scared about the consequences of heavy downpour created by Indra. But Krishna lifted Mount Govardhan with his litde finger and sheltered men and beasts from the rain.
On this very auspicious day, people of North India build a hillock of cowdung similar to Govardhan mountain and decorate it with flowers. And then the cowdung hillock is worshipped. However, the day is also observed as the days of Annakoot and the day of worshipping of Goddess Lakshmi.