Phalgun Amavasya 2011 or Falguna Amavasi

Phalgun Amavasya, or Falguna Amavasi, is the no moon day or new moon day in the Phalgun month. As per traditional North Indian calendars, Phalgun Amavasya 2011 is on March 4. As per calendars followed in Gujarat, Andhra Pradesh, Maharashtra and Karnataka, Falguna Amavasi 2011 is on April 3.
In calendars followed in Andhra Pradesh, Maharashtra and Karnataka, Phalgun Amavasya marks the end of a traditional lunar year. The next day is observed as Yugadi and Gudhi Padwa in these regions. 
When Phalgun Amavasya is observed in North India, the corresponding Amavasi in Kannada, Gujarati, Telugu and Marati calendars is the Magh Amavasya.
When Phalgun Amavasya is observed in Gujarat, Andhra Pradesh, Maharashtra and Karnataka, the corresponding Amavasya in North India is the Chaitra Amavasi.