Amavasya

Amavasya or a new Moon day is the start of the new lunar month. It is a religious day when people keep fast.It is believed that during Amavasya, evil spirits get unusual powers and may cause harm. To counter this, people perform Kali Puja, as Goddess Kali is considered to be the destroyer of evil spirits. While, it is not the case that Amavasya is only inauspicious. It has good effects as well, and it should be considered auspicious.

The new moon day (all 24 hours and not just the night) is considered part of Amavasya.  The lunar month starts on the day following the full moon or purnima and therefore Amavasya always falls in the middle of the month.the lunar month starts on the day after the new moon, making Amavasya the last day of the lunar month in those places. Many festivals, the most famous being Diwali (the festival of lights), are observed on Amavasya. Many Hindus fast on Amavasya. This festival celebrate in women's and wear new saree.  

List of Amavasyas in 2015

Date    Month           Day                    Name of Amavasya
20th    January          Tuesday                 Magha Amavasya
18th    February        Wednesday            Phalguna Amavasya
20th    March            Friday                    Chaitra Amavasya
18th    April               Saturday                Vaishakha Amavasya
18th    May                Monday                Jyestha Amavasya
16th    June               Tuesday                Ashadha Amavasya
14th    August            Friday                  Shravana Amavasya
13th    September      Sunday                 Bhadrapada Amavasya
12th    October          Monday                Ashwin Amavasya
11th    November     Wednesday            Kartik Amavasya
11th    December       Friday                  Margashirsha Amavasya