Vikram Samvat and also known as the Vikrami calendar, is the historical Hindu calendar on the Indian subcontinent. The #VikramSamvat was started after the death of righteous King Vikramjeet Pawar of #Ujjain. It is named after him. It is the official calendar of #Nepal. In India it is used in several states.[1][2] The calendar uses lunar months and solar sidereal years.

https://en.wikipedia.org/wiki/Vikram_Samvat

The Vikram Samvat has been used by #Hindus and #Sikhs.[10] One of several regional Hindu calendars in use on the Indian subcontinent, it is based on twelve synodic lunar months and 365 solar days.[10][11] The lunar year begins with the new moon of the month of Chaitra.[12] This day, known as Chaitra Sukhladi, is a restricted holiday in India.[13]

The calendar remains in use by #Hindus in Nepal and north, west and central #India.[3] In south India and portions of east and west India (such as #Assam, #WestBengal and #Gujarat), the Indian national calendar is widely used.[14]