Aditya Pujan is observed on Sundays in Shravan month in Maharashtra & some parts of Gujarat. In 2017, Aditya Pujan dates are: 30 July, August 6, August 13 and August 20.
As each day of Shravan maas is dedicated for a specific vrata or puja, Surya Bhagwan is worshipped on Aditya Pujan days for better health.
Surya Bhagavan is worshipped with special rituals on these days at the time of sunrise. Special Naivedya (bhog) like Kheer is offered to the Lord and distributed among devotees after the pujan. Aditya Hridayam and Surya Astottram are the important prayers to chant on Aditya Pujan days.
Apart from Sundays in Shravan, Sashti and Saptami are also dedicated to Surya Bhagavan. Surya Sashti is observed on Sashti in Shukla Paksha.
In 2016, Aditya Pujan dates were: August 7, August 14, August 21 and August 28.
In 2015, Aditya Pujan dates were: August 16, August 23, September 6 and September 13.
In 2014, Aditya Pujan dates were: July 27, August 3, August 10 and August 17.
In 2013, Aditya Pujan dates were: August 11, August 18, August 25 and September 1.
In 2012, Aditya Pujan dates were: July 22, July 29, August 5 & August 12.