Happy Nepali New Year to everyone! Today is Baisakh the first, of the year 2064, the first day of the first month of the Nepali calendar.
Nepal does use the Gregorian calendar, but still officially uses the Bikram Calendar in most contexts. It is a solar calendar based on ancient Hindu tradition. The Bikram calendar is 56.7 years ahead of the solar Gregorian calendar.
For example, the year 2056 BS began in AD 1999 and ended in AD 2000. The calendar starts with the first day of the month Baisakh, which usually falls on the 13th or 14th of April in the Gregorian calendar. Whilst not celebrated in Nepal, other than some families buying new cloth, Nepalis around the world come to celebrate the new year.