List of Amavasya 2015 dates is given here. Amavasya 2015 calendar begins with Magha Amavasya and ends with Margashirsha Amavasya.
There are 12 Amavasya in 2015 – one in each month.
Amavasya has great significance in Hinduism. Ashada Amavasya is referred to as Chukkala Amavasya; Shravana Amavasya is celebrated as Polala Amavasya (Bail Pola), Bhadrapada / Ashwin Amavasya is observed as Mahalaya Amavasya (Sarva Pitru Amavasya).
Here is the list of Amavasya dates in 2015
Magha Amavasya: January 20, 2015 (Tuesday)
Phalguna Amavasya: February 18, 2015 (Wednesday)
Chaitra Amavasya: March 20, 2015 (Friday)
Vaishakha Amavasya: April 18, 2015 – Shani Amavasya (Saturday)
Jyeshta Amavasya: May 18, 2015: Somvati Amavasya (Monday)
Ashada Amavasya: June 16, 2015 (Tuesday)
Ashada Amavasya: July 16, 2015 (Thursday)
Shravana Amavasya: August 14, 2015 (Friday)
Bhadrapada Amavasya: September 13, 2015 (Sunday)
Ashwin Amavasya: October 12, 2015: Somvati Amavasya (Monday)
Kartik Amavasya: November 11, 2015 (Wednesday)
Margashirsha Amavasya: December 11, 2015 (Friday)