Ganesh Chaturthi typically falls in the Hindu month of Bhadrapada, which usually corresponds to August or September in the Gregorian calendar. This year it will be observed on Tuesday, September 19th. It lasts for 10 days, with the main day being the fourth day of the waxing moon period (Shukla Paksha Chaturthi). The festival begins with the installation of clay idols or statues of Lord Ganesha in homes, public places, or temples.