Tamladu Festival in Itanagar is one of the ancient festivals of Arunachal Pradesh. The hills and valleys are the homeland of various tribes. These tribes still hold on to their conventional tradition and beliefs. Cultivation is the main livelihood of the hilly tribes. These tribes mainly depend on the agriculture and harvest and that make them to worship Nature.

Tamladu Festival is prayer that is offered to the God of Earth and the God of Water. The tribal people believe in nature worship and according to their belief, nature protects them from natural calamities. The supreme god of the tribe is Lord Jebmalu. Jebmalu is worshipped for the welfare of the people and crops and domestic animals.

Losar is celebrated by the Monpas who are a majority in Tawang, Arunachal Pradesh. Belonging to the Mongoloid stock, the Monpas are mainly into agriculture and animal husbandry. It must also be mentioned that Losar is the most important festival of the Monpas in Tawang.

Commemorating the advent of the new year, Losar is the occasion when the Monpas feast, drink and make merry. Relatives and friends get together and celebrate this festival in a very pompous manner. The festival of Losar falls in the end of February or early March and is celebrated for 8 - 15 days. Indeed, the joie-de-vivre that characterizes this festival is simply fascinating.