As per the Hindu Calendar, Kartika Masam is the sacred month among all the lunar months. Most of the devotees take oath to take holy dip in the ganga river during the Kartika Masam. The Hindu ritual of holy dip during Kartika Masam starts on the day of Sharad Purnima and ends with the Kartik Purnima. This festival starts with the Tithi of Prabodhini Ekadashi . Ekadashi is the 11th day and Karthika Pournami is the 15th day of Kartika Masam during Shukla Paksha.