Ganesh Chaturthi , also known as Vinayaka Chaturthi, also called Vinayagar in Tamil Nadu, is the Hindu festival celebrated on the occasion of birthday of Lord Ganesha, the son of Shiva and Parvati, who is believed to bestow his presence on earth for all his devotees in the duration of this festival. It is the day Shiva declared his son Ganesha as superior to all the gods. Ganesha is widely worshipped as the god of wisdom, prosperity and good fortune and traditionally invoked at the beginning of any new venture or at the start of travel.
The festival, also known as Ganeshotsav (“festival of Ganesha”) is observed in the Hindu calendar month of Bhaadrapada, starting on the shukla chaturthi (fourth day of the waxing moon period). The date usually falls between 19 August and 20 September. The festival lasts for 10 days, ending on Anant Chaturdashi (fourteenth day of the waxing moon period).
While celebrated all over India, it is most elaborate in Maharashtra, Andhra Pradesh,Karnataka and Goa. Outside India, it is celebrated widely in Nepal and by Hindus in theUnited States, Canada, Mauritius, Singapore, Thailand, Cambodia, Burma and Fiji.