Triyuga (Nepali: त्रियुगा), also known as Gaighat, is a city and municipality in the Udayapur District in the Sagarmatha zone of south-eastern Nepal. According to the 1991 Nepal census, it had a population of 55,291. According to the 2011 Nepal census, Triyuga had 70,000 inhabitants. It is divided into 17 wards.Hospitals and clinics are available in the town.There are 6 police stations in the town.Moreover Army Barack is also situated in the city.