Sankashti Chaturthi Vrat is an auspicious day dedicated to Ganesha and it falls on the fourth day after Poornima or full moon day in a traditional Hindu calendar. The February 2017 Sankashti Vrat date is Tuesday February 14. Moonrise or Chandrodaya time is at 9:16 PM. As it is on Tuesday, there is Angarak Yog.
Chaturthi the fourth day during the lunar fortnight is dedicated to Ganesh. Sankashti Chaturthi Vrata falls during the waning phase of the moon. Fasting, from sunrise to sunset or till sighting of moon, is undertaken by Ganesh devotees.
It is popularly believed by Ganesh devotees that observing Sankashti Chaturthi Vrata will bring material progress, happiness and fulfillment of desires.
The importance of Sankashti Chaturthi Vrat was narrated by Sri Krishna to Yudhishtira. Significance of it is also found in the Narasimha Purana and Bhavishaya Purana.