Surya Shashti(Bhadrapad Shukla Shasti)
Every month, in the shukla paksh , Saptami and Shashti are generally observed as fast days in reverence to Surya (Sun God). On this day generally the month changes. By observing a fast on this day, one is blessed with imperishable benefits. A bath in Ganges or sacred rivers and worship of Surya with red flowers of Kaner, red powder (gulal), lit lamps and in red clothes, is done. In most of the houses of Hindus, there is the tradition of offering water to the sun, after bath.
Surya Shashti fast taken in the month of Kartik on Shukla Shashti, also called Dala Chhath, is undertaken after a son is born in the family. It is a three day fast.
Achla Saptmi, also called Saur Saptmi or Surya Saptami,occurs in the month of Magh in reverence to Surya God. Image of Surya is erected in the centre along with that of Shiv and Parvati, after worship, the images are immersed in water. It is said that on this day, Saanv, son of Krishna, by his wife Janvanti, had a bath in Chandrabhaga river and was awarded with the image of God Surya, floating on a lotus leaf in the river. This was installed in Konark (Kondadatey) now in the famous chariot black temple of Konark (Orissa).
The Story Behind Surya Shasthi:
Another legend is that once Surya, the Sun God pursued the beautiful sea maiden Chandrabhaga so relentlessly that she plunged into the sea at this point (Konark) and perished. Here at Konark temple, Surya mourns Chandrabhaga?s tragic death for ever. For centuries ancient mariners, called this temple, the Black Pagoda.