Usually, April 14 is marked as the first day of Baisakh, the first month of the Bikram Sambat calendar (official calender of Nepal).
What is pus month?
Pausha (Sanskrit: पौष Pauṣa; Hindi: पूस Pus; Tamil: தை Tai) is a month of the Hindu calendar and as well in the Indian national calendar; it's the tenth month of the year, corresponding with December/January in the Gregorian calendar.
How many months are there in Hindu calendar?
Hindu calendar, dating system used in India from about 1000 bce and still used to establish dates of the Hindu religious year. It is based on a year of 12 lunar months; i.e., 12 full cycles of phases of the Moon.