The moon is not visible on the day of Amavasya, that means the one who does not decay and rise is called Amavasya. Amavasya comes only once in a month. In the scriptures, Pitridev is considered to be the lord of Amavasya Tithi. Amavasya is the period of meeting of Sun and Moon. When Sun and Moon come to the same degree then we call it Amavasya. No eclipse can take place without the relation of Moon and Sun. That’s why it is necessary for the Sun and Moon to come on parallel degrees on Amavasya. There is also a law to donate to the needy on Amavasya. It is said that people’s sufferings go away by donating on Amavasya. Also they get a happy life. In astrology, the moon is considered the deity of the mind. The moon is not visible on the new moon day. In such a situation, people who are very emotional, this thing has the most effect on them.On Amavasya, it is also common to donate grains, money, and clothes to the needy as a way of placating one’s ancestors. If the moon is not visible on this day, then the movement in our body increases more. In the scriptures, the 16th phase of the Moon has been called ‘Ama’. There is a great art named ‘Ama’ of the moon, which includes the power of 16 arts of the moon. Many names of Ama have come in the scriptures, such as Amavasya, Surya-Chandra Sangam, Panchadashi, Amavasi, Amavasi or Amamasi. In the scriptures, Pitridev is considered to be the lord of Amavasya. Amavasya is the period of meeting of Sun and Moon.