Pasighat's calendar is anchored by the agrarian festivals of the Adi people, alongside modern tourism events.
* **Solung Festival (September):** The most significant socio-religious festival of the Adis. It is a multi-day celebration involving feasting, the brewing of *Apong*, Ponung dances, and the ritual sacrifice of Mithuns (bovines) to pray for a bumper harvest. * **Unying Aaran (March):** The traditional New Year festival of the Adis, heralding the arrival of spring. It involves community feasts and the *Bari* dance. * **Siang River Festival:** Originally known as the Brahmaputra Darshan, this tourism-focused festival aims to promote eco-tourism, showcasing local culture, handlooms, and adventure sports like river rafting.