Amavasi, also known as Amavas, is darkest day in a lunar Hindu calendar and is also referred as no moon day. In October 2011, Amavasi is on October 26. The Amavasi in October 2011 is of great significance as it is the Diwali day. Traditional Lakshmi Puja rituals are held on the day. Amavas begins at 4:24 AM on October 26 and ends at 1:58 AM on October 27
Diwali and Narak Chaturdasi are observed on October 26, 2011. The Gujarati New Year and Annakut is observed on the next. Gujarati New Year also begins on October 27.
The day also marks the end of Ashwin month as per traditional Hindu calendar followed in Gujarat, Maharashtra, Goa, Andhra Pradesh and Karnataka.