Somvati Amavasya, Amavasya which falls on Somvar (Monday) is an auspicious occasion. It has great significance for Shiva Puja, Surya Puja, Vishnu Puja and Durga Puja.
In 2013, Somvati Amavasya comes three times: in March, July & December months.
Somvati Amavasya March 2013
Somavati Amavasya of March 2013 falls on 11 March. It is Phalguna Amavasya as per North Indian Calendar and Magha Amavasya in Amavasyant Panchang followed in Maharashtra, Gujarat, Goa, Andhra Pradesh and Karnataka.
It is even more auspicious as it falls just on the following day of Maha Shivaratri.
Somvati Amavasya July 2013
Somvati Amavasya of July 2013 falls on 8 July. It is Ashada Amavasya in North Indian Hindi calendars and Jyeshta Amavasya in Amavasyant calendars.
Somvati Amavasya December 2013
Somvati Amavasya of December 2013 falls on 2 December. It is Margashirsha Amavasya in Hindi Panchang and Kartik Amavasya as per Amavasyanth calendars.