Nepal Era (नेपाल सम्बत Nepāl Sambat) is the national lunar calendar of Nepal. The era started on 20 October 879 AD and was in widespread use for all daily purposes until the beginning of the 20th century when it came under official disapproval. Nepal Sambat appeared on coins, stone and copper plate inscriptions, royal decrees, chronicles, Hindu and Buddhist manuscripts, legal documents and correspondence.
Today, it is used for ceremonial purposes and to determine the dates to celebrate religious festivals and commemorate birthdays and death anniversaries. The year 2013-14 AD corresponds to 1134 in Nepal Sambat and 2070-71 in the Bikram Sambat or Vikram Samvat calendar.
Following a century of official neglect and even suppression, Nepal Sambat has been revived as a symbol of Nepal's glory and national unity. In 2008, the government named it a national era. On 25 October 2011, the government decided to bring Nepal Sambat into use as the country's national calendar, and formed a taskforce to make recommendations on its implementation. However, no action has been taken after that to bring the era into practice.
During the celebrations marking New Year's Day of Nepal Sambat 1133 on 14 November 2012, the organizing committee demanded that Nepal Sambat too be printed on banknotes and coins while the prime minister pledged to give a public holiday on New Year's Day from 2013.
Nepal Sambat was replaced as the national calendar in Rana period of Nepal. The victory of the Gorkha Kingdom resulted in the end of the Malla dynasty and the advent of The Shahs used Saka era. However, Nepal Sambat remained in official use for a time even after the coming of the Shahs. For example, the treaty with Tibet signed during the reign of Pratap Singh Shah is dated Nepal Sambat 895 (1775 AD).
In 1903, Saka Sambat in turn was superseded by Bikram Sambat as the official calendar. However, the government continued to use Saka Sambat on gold and silver coins till 1912 when it was fully replaced by Bikram Sambat.
Despite the loss of legal recognition for Nepal Sambat, many people in the Kathmandu Valley and other parts of the country have continued using the calendar for ceremonial purposes. It is used to date manuscripts, books and inscriptions. Birth and death anniversaries, and almost all the religious festivals, are observed according to the lunar calendar. Horoscopes are also based on the lunar calendar.