Happy Ganesh Chaturthi 2025: Ganesh Chaturthi is a 10-day festival. As per the Hindu calendar, Ganesh Chaturthi begins on the fourth day of the Hindu month Bhadrapada (August-September) every year. The festival culminates on the tenth day, known as Anant Chaturdashi. This year, the Ganesh Utsav festival begins on August 27.