The New Year festival, called "Losar", is perhaps the most important festival of
Tawang District in Arunachal Pradesh. The Losar
festival of the Monpas is their new year of festival. On this occasion people clean out their homes to usher in the new year and to discard the old. It mostly falls in the last part of February or early part of March and is celebrated with lots of fun and festivity, which lasts for about 8 to 15 days.
On the eve of the festival people clean out their homes to usher in the new year and discard the old. The dirt and grit of the old year is considered to symbolize ill health. During the five days of festivities prayers are offered for prosperity and good health, the festivities include the hoisting of religious flags atop their homes; visits to the homes of friends and relatives; holy Buddhist scriptures are read in every home and butter lamps are lit in houses and the campuses.