Nepali Patro with Festivals, Miti and Tithi
Vikram Samvat calendar with date converter
The Western calendar is also a solar calendar. A year in calendar is the time required for the earth to complete one orbit around the sun. The earth takes about 365 days 5 hours 48 minutes and 46 seconds to complete it's one orbit round the earth. That period is counted as a full year.
Eastern Hindu lunar calendar is based on both the sun and the moon; it uses a solar year but divides it into 12 lunar months. A lunar month is precisely 29 days 12 hours 44 minutes and 3 seconds long. Twelve such months constitute a lunar year of 354 days 8 hours 48 minutes and 36 seconds. To help the lunar months coincide with the solar year, the practice of inserting an intercalary (extra) month arose. Hence an extra month, called the Purushottam
month (Adhik Mas), is inserted every 3 years.
Lunar days in eastern calendar are called “Tithis”. They are calculated using the difference of the longitudinal angle between the position of the sun and moon. Because of this, tithis may vary in length. Consequently, the tithi may or may not have changed by the time the day has changed at sunrise. And that is why we find at certain times a tithi being omitted, and at certain times, two consecutive days sharing the same tithi.
Most of the festivals falls on lunar calendar and we use Bikaram Sambat which is solar calendar. That is the reason most of the festivals in Nepal do not fall under the same day in Bikram Sambat calendar all the years.
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Nepali Calendar Bikram Sambat 2069