In 2020; Chhath puja 4th day falls on Saturday, 21 November.
The last day chhath puja is known as Usha Argh and Paran. The offering given to the Sun God in the morning is called Bihaniya Arghya or morning offering. The vrattis and the family members again gather at the bank of the river early in the morning and sit until the sun rises. They sing and worship Chhati Maiya. When the sun rises, the morning arghya is offered by going into the water with arghyas kept in sauri or supali. After morning offerings, the vrati distribute Prasad among each other and take blessings from elders on the ghat. After that, they come back home. After returning from the ghat, vrattis break their 36-hour long fast by taking ginger and water. After that delicious food is prepared and offered to the vrati to eat. This is called Paran or Parna. As they fast for a very long period, they usually take light food on that day. This way the four-day long Chhath Puja is concluded.
Devotees reach on the Ghats along with their family members and relatives on the final day and offer bhorwa arghya (morning offerings) to the rising Sun. At the Ghats, Devotees bend down on their knees to worship Chaithhi Maya after Arghya (Offerings). They also distribute Thekua and then break their fasts after reaching home.