Ganesh Chaturthi is celebrated each year to mark the birth of Lord Ganesha. He is the God of new beginnings. His birth month falls in the month of Bhadra and thus the same falls in the month of August- September (according to the Gregorian calendar).
Apart from the same, two idols of Goddess Gauri are brought home and worshipped along with elaborate rituals. Since Gauri is the epitome of Goddess Parvati, the two idols signify Goddess Saraswati and Laxmi. They are the daughters of Goddess Durga.
It is celebrated in states of Maharashtra, Gujarat, Goa, Madhya Pradesh, etc. with pomp and grandeur. It is considered as one of the most important festivals of Maharashtra, and it is associated with prosperity and good luck.