Bohag Bihu, also known as Rongali Bihu, is the Assamese New Year and is observed for three days as per the traditional Assamese Calendar. The New Year is observed on the first day of Bohag month. The Hindu New Year celebrations in
begins on the last day of the Assamese month ‘Chait.’ In 2015, the date of Bohag Bihu is April 15. The first day of celebration is dedicated to cattle and is April 14, 2015. Assam
The first day of the Rongali Bihu New Year celebrations which falls on the last day of Assamese month ‘Chait’ is known as ‘Goru Bihu’ (the festival of cow). In 2015, the date of Goru Bihu is April 14.
The second day of Bohag Bihu celebrations is known as ‘Manuh bihu’ (the festival for the people). It is popularly known as the traditional Assamese New Year – Rongali Bihu or Bohag Bihu. It is observed on the first of Bohag month. In 2015, the date of Bohag Bihu is April 15.
The third day of Assamese New Year Bihu celeberations is known as ‘Gosain bihu (God’s bihu). In 2015, the date of Gosain Bihu is April 16.
You can find more details about the Assamese New Year celebrations in this article.