Si-Donyi festival of the Tagins is celebrated on 6th January for welfare and prosperity of the people. Rituals are performed to appease Si (Earth) and Donyi(Sun) Gods. Irrespective of the age, sex and sects every one participate in the celebration. A community feast is also organized at the end of the festival. Folk Dance are performed.

Reh is celebrated by the Idu Mishmis on 1st February. While celebrating the festival, animals and fowls are offered in the name of different Gods and deities for welfare and prosperity of the organizer and community. Igu dance is performed. The priest plays a magnificent role in ritualistic part of the festival.

This festival is celebrated by the Hill Miri tribe on 4th to 8th February. It is an annual festival associate with their agriculture. This festival appeals to God Boori Uyi for blessing, bumper harvesting crops and prosperous life. The colourful dances, songs and community feast etc. are the main features of the festival. The priest and his assistant erect and alter and chant hymn over the sacrifice animals and fowl on the day

The Losar is the New Year festival of the Buddhist tribes of Mahayana sect viz. Monpa, Sherdukpens, Memba, Khamba and Nah celebrated on 11th February. During this festival worship are performed by the Lamas to have good life and to obtain blessings for the entire community for peace and prosperity. The festival is celebrated in the Buddhist temple viz. Gompa. The Lamas recite the appropriate religious text on the occasion. Different pantomime dances are performed by the malefolks.

It is a festival celebrated by the Tribes of Idu-Mishmi, of Dibang and Lower Dibang Valley District. During this festival, prayers are offered to the God of Earth and the God of Water for protection agasint natural calamities. It is celebrated in the month of February 15th every year.

Of the so many colourful festivals of the Miji (Sajolang) of West Kameng, Chindang is one of them. It is an annual festival associated with their agriculture. It celebrates in the middle part of autumn season. This festival celebrates for 10 days. The festival is headed by the priests and village elders, who performed ritualistic part by chanting hymns on the day. Songs, dances, traditional games and sports, community feast, sacrifice of animals and fowl are the main feature of the festival.

It is an agricultural festival of the Wanchos, celebrated on 16th February every year on community basis for four to six days to propitiate the benevolent God and perform traditional dances. A number of animals and fowls are offered in the name of concerned Gods with the help of priest. The traditional songs and dances are performed. On the concluding day menfolk get together in the dormitory for community feast and drink.

This festival is celebrated by the Mishing Community and is a festival based on agricultural festival celebrated on 23rd February every year with a day long programme.

Nyokum Yullo festival of the Nyishi is celebrated on 26th February every year to propitiate the God and Spirits for bumper harvest, welfare and prosperity. It is an agricultural festival observes just before the beginning of Jhum Cultivation. The priest performed appropriate rituals by offering animals and fowls in front of the altar especially erected in the festival ground. Folk songs and dances are performed.

Mopin is an agricultural festival of the Galos, celebrated 1st to 5th April every year. Mopin is synonymous with wealth and prosperity. It is observed with enthusiasm and gaiety. Rituals are performed with the help of priest to propitiate the deity of wealth seeking for a rich harvest, good health and universal happiness. A community feast, smearing of rice powder on each other’s face and Mopin dance[Popir] are some of the salient features of the festivals.

Pongtu festival of the Tutsa tribe of the Changlang District is a festival of Agriculture Celebrated on 11 April every year. Pongty kuh is one of the oldest agricultural festival observed by Tutsa tribe on the every of rainy season. Literary meaning of Pongtu is “ Pong” means wing “Tu” mean retreating, kuh mean festival.

It is the biggest festival of the Khamptis and Singphos observed with due solemnly on 14th April, where the image of Lord Buddha, the enlightened one, is brought out of its abode and bathed ceremoniously. It is a new year’s festival. During the festival days the monks and villager pour water on the images and they also sprinkle water on each other out of great fun and merriment. It is basically a socio-religious festival.

The Tangsas celebrate the festival annually in the month of April. It is basically an agricultural festival to appease deity, mainly Rangfra for bumper crops and prosperous life.

Dree is the main agricultural festival of the Apatanis, celebrates on 5th July every year for three days after completion of plantation of paddy to propitiate spirits and deities seeking for bumper cropping, welfare and propitiate of the people and the animals. The rituals are performed with eh help of priest. Folk –Song and dances are performed by both the sexes. Food and drinks are lavishly served. On the occasion, community feast is offered to the guest and visitors.

Solung is the colourful festival of the Adi-groups, which lasted for seven days. The villagers prepare enough rice beer and store plenty of meat and vegetables for the joyous occasion to entertain guest and family members. It is an agricultural festival celebrated on 1st September for bumper cropping and prosperity of the people. Rituals are performed to propitiate Solung deity. Ponung and other folk dances form a part and parcel of the celebration. This festival celebrated since time immemorial in the Adi society. Mithuns, Pigs etc. are sacrifices during this festival.

It is a community festival of Akas, which celebrate annually in the month of November. The festival is associate with their agriculture. The priests and village elders head the celebration of the festival. Traditional songs, dances, animal sacrifice, community feast etc. are main feature of the festival. The priest performs number religious rituals for three to four days, appeasing to different gods and goddess for blessing of prosperous life to the mankind.

Loku is the main agricultural festival of the Noctes. Renglo Loku is celebrated at the advent of the agricultural season while Chalo Loku is celebrated after harvest on 25th November every year. The pigs and buffaloes are offered to the Almighty of the community/ the famous Chalo dance and Loku dance are performed during the festival days.