Here's a Ganesh Chaturthi Calendar which will keep you well informed over the next couple of years. However, the dates are subject to change depending on the lunar activity. According to this calendar, Ganesh Chaturthi 2018 will begin on Wednesday , 12 September and ends on Sunday , 23 September.
Lord Ganesha is a popular Hindu deity since He is invoked before the beginning of any auspicious journey. The diety with the countenance of an elephant is synbolic.
Another name for 'Ganesha Chaturthi' is ' Vinayak Chaturthi'.
It is usually a ten-days festival, that falls in the Hindu month of Bhadra (mid-August to mid-September) and ends on Anantha Chaturdashi.