Festival guide
Bihu
বিহু
Assamese New Year and harvest festival.
At a glance
How is Bihu dated?
Bihu is an annual Hindu observance whose Gregorian date can change each year. Samvat calculates each year's date from its sankranti Panchang rule; choose a year for the exact date and tithi.
Also known as: Rongali Bihu, Bohag Bihu.
Yearly reference
Bihu dates by year
Choose a year for the exact Gregorian date, Hindu date, observance rule, and related calendar links.
Why this date?
Rongali Bihu is tied to Mesha Sankranti, when the Sun enters sidereal Mesha (Aries), marking the Assamese New Year and spring harvest.
Learn how Hindu calendar dates are calculatedBihu tithi and Panchang details
Date determined by
Solar ingress (Sankranti)Category
Regional festivalNakshatra
ShatabhishaDietary practice
No specific restrictionSignificance
Marks the Assamese New Year. Three Bihus celebrate different seasons.
Traditions and Regions
Traditions
Observed in
Common questions
How is Bihu dated?
Bihu is an annual Hindu observance whose Gregorian date can change each year. Samvat calculates each year's date from its sankranti Panchang rule; choose a year for the exact date and tithi.
What is the tithi for Bihu?
The Hindu date is calculated separately each year from the tithi, paksha, and Hindu month for Bihu. Choose a year above to see the details.
Can the date differ by city?
Yes. Panchang values depend on sunrise, sunset, moonrise, and timezone. Samvat's public festival page uses an India-baseline calculation; local observance can differ by city, sampradaya, or family tradition.