Chhath Parva attracts thousands of pilgrims to the holy town of Janakpur in south-eastern Nepal. But it is celebrated all over Nepal including Kathmandu where people from the Terai gather along the banks of rivers especially Bagmati to worship. The goal they say is to achieve purity both physical and spiritual.
Chhath Puja is a four-day-long festival celebrated in the Mithila region of Nepal as well as in parts of India. The festival is dated based on the local calendar, but it typically falls sometime in October or November on the Gregorian Calendar.
The ritual of Chhat Parba includes taking holy baths, fasting, standing and worshiping the sun for a long time, and offering Prasad and Argha to ‘Rising and setting Lord Surya”. Some worshipers observe fasting even without water for 36 hours continuously.