Sankashti Chaturti, also known as Sankat Nivaran Chaturthi, is an auspicious day dedicated to Sri Ganesha in a traditional Hindu lunar month. September 2012 date of Sankashti Chaturthi Vrata is September 4 in Maharashtra and other parts of India. The Chandrodaya or moonrise time is 9:06 AM on September 4, 2012. The Sankashti Chaturthi in September 2012 is more auspicious as it falls on Tuesday and therefore it is Angarak Sankashta Chaturthi. It falls during the waning phase of the moon – fourth day after the full moon. Some homes and sarvajanik or public celebrations end on the day with Ganesh immersion.
Fasting on Sankashti Chaturthi begins at sunrise and ends after evening puja or after sighting the moon. Ganesh Temples conduct special pujas on the day.
It is widely believed by Ganesha devotees that observing Sankashti Chaturthi will bring material progress, happiness and fulfillment of desires.
The importance of Sankashti Chaturthi vrat was explained by Lord Krishna to Yudhishtira, the eldest of the Pandavas. It is also detailed in the Narasimha Purana and Bhavishaya Purana.