Stone inscriptions in the Kathmandu Valley in the context of "Newar language"

The Newar language of Nepal has the fourth oldest literature tradition among the Sino-Tibetan languages (after Chinese, Tibetan and Burmese).

The earliest known document in Newar is called "The Palmleaf from Uku Bahal" which dates from 1114 during the Thakuri period. The earliest dated stone inscription in Nepal Bhasa is dated Nepal Sambat 293 (1173 AD). From the 14th century onwards, an overwhelming number of stone inscriptions in the Kathmandu Valley, where they are an ubiquitous element at heritage sites, are in Nepal Bhasa.

Nepal Sambat (Newar: 𑐣𑐾𑐥𑐵𑐮 𑐳𑐩𑑂𑐧𑐟‎, nepāla samvat, meaning "Nepal Era") is the lunisolar calendar used by the Newar people of Nepal. It was the official calendar of Nepal since its inception on 20 October 879 till the end of the Malla dynasty in 1769. During the period, Nepal Sambat appeared on coins, stone and copper plate inscriptions, royal decrees, chronicles, Hindu and Buddhist manuscripts, legal documents and correspondence. After the conquest of Nepal by the Shahs in 1769, the official calendar of the country was replaced with Shaka era and then later by the Bikram Samvat.

The calendar still holds cultural significance in Nepal, especially among the Newar people, whose festivals are based on this calendar system. Owing to its cultural and historical significance, the government of Nepal declared to include Nepal Sambat in official government documents alongside Vikram Sambat since 11 November 2023.