Trashigang Tshechu is celebrated in the courtyard of the Trashigang dzong. Trashigang being the largest district, every village has its own annual festival, however the Trashigang Tshechhu is the highlight and the main festival in the district. The festival is held between 7th to 11th days of the tenth month of the Bhutanese calendar.
The actual festival is celebrated only for three days, however the preparations begin 2 days prior. On the first day of the festival monks perform the “thrue” (ceremonial ablutions) and on the second day rehearsals are done. The proper Tshechu begins on the third day. On the fourth day the Thongdrol of Neten Chudrug (Sixteen Arhats) is unfurled amidst a flurry of mask dances. On the final day, the old Thongdrol of Guru Tshengyed is displayed. The unfurling is accompanied by the performance of Guru Tshengyed Chhams.
The festival is attended by people from the whole of Trashigang Dzongkhag and also the nearby districts such as Samdrup Jongkhar, Pema Gatshel, Trashiyangtse and Mongar. The semi- nomadic people residing in the valleys of Merak and Sakteng and the Khengpa community also come to witness the festival.