“ಪಾಂಡವಪಂಚಮಿ”
It is observed on Karthika Shudda Panchami
“Pandava Panchami” is believed to be the day when Pandavas completed the thirteen year of Vanavasa and Agnatavasa on this day.
After having lost the game of dyutha (dice) in the Mahabharata due to the cheating of Shakuni and Duryodhana, Pandavas had to go on a 13-year exile. Arjuna appeared before the Kaurava Army to defend the kingdom of Virata, as the saarathi of Uttarakumara, on this day to defend Uttara Gograhana.
Bhishmacharyaru, the Pitamaha of the Kauravas and Pandavas, reminded Duryodhana that the Pandavas had completed the 12-year exile in forest (vanavasa) and one year of disguise i.e., AJnaathavasa, on the Kartika Shukla Panchami day and suggested him to return their kingdom, which he refused.