Amavasys is the New moon day or No moon day of the month. It is the fifteenth day of the waning moon phase. It marks the end of Krishna paksha as per Hindu calendar.
This month Amavasya date is Thursday, 07th April , 2016. According to Amavasyant calenders it is called Chaitra Amavasya. As per purnimant calenders it is called as Vaishakha Amavasya. Amavasya is good for performing Shraddha rituals to ancestors. Kalasarpa Dosha puja is also performed on this day.