Today, 11 January 2013 is Amavasya (Paush Amavasya / Margashirsha Amavasya). In January 2013, Amavasya begins at 4.35 AM on 11 January and ends at 1.13 AM on 12 January.
This No Moon is Paush Amavasya in North Indian calendars and Margashirsha Amavasya in Marathi, Telugu, Konkan, Kannada & Gujarati calendars. It falls in Margazhi Masam in Tamil calendar and Dhanu Masam in Malayalam calendar.
It is celebrated as Bakula Amavasya (Vakula Amavasya) in Odisha.
This Amavas marks the end of Margashirsha Month in Amavasyant Panchang. It is also considered as Darshvela Amavasya.
On 11 January 2013, Hanumath Jayanti is also observed in Tamil Nadu.