Ganesh Chaturthi (also called Ganeshotsav) is a Hindu festival celebrating the birth anniversary of Lord Ganesha. While held all over India, it is at its most elaborate in Maharashtra, and other areas which were former states of the Maratha Empire. The festival is observed in the hindu calendar month of Bhaadrapada, starting on the shukla chaturthi (fourth day of the waxing moon period). This typically comes sometime between 20th of Aug and 15th of September. The festival lasts for 10 days, ending on Ananta Chaturdashi.
The Visarjan (immersion) Processions and Ceremony
The festival ends with the ceremony of immersion of the idols in the sea or rivers and wells. This ceremony which is called Ganesha-Visarjan which means immersion of Ganesha is as popular as the festival proper. During the immersion ceremony huge crowds move in a procession carrying idols of Ganesha towards the places of immersion. These processions which take place with great fanfare, begins in the afternoon and continue till the late hours of the night.
Check out this Powerpoint Presentation below on Ganesh Chaturthi