Lahan (Nepali: लाहान) is a town and municipality in Siraha District in the Sagarmatha Zone of south-eastern Nepal. It is connected with Mahendra Highway, which is also called the east-west highway close to the Indian border, neighboring the Indian state Bihar.. It is located nearly 350 kilometers or 99.3 miles east of the capital, Kathmandu.Lahan is located at the latitude of 26.717 and longitude of 86.483 . It is at an elevation of 111 meters above sea level. It follows Nepali time zone, UTC/GMT Offset: +05:45 hours. The closest major airport is Janakpur Airport (JKR / VNJP). The Indian border is situated 162 kilometers from the east-west highway. Laukha is the nearest entry point into India. The town has many hotels and eateries along the highway. The population has increased gradually due to urbanisation over a period of 20 years.[1] All disputes are settled in the district court located in Siraha.