Amavasya

Amāvásyā (Sanskrit: अमावस्या) is the lunar phase of the new moon in Sanskrit. Indian calendars use 30 lunar phases, called tithi in India.^[1]^[2] The dark moon tithi is when the Moon is within 12 degrees of the angular distance between the Sun and Moon before conjunction (syzygy).^[3] The New Moon tithi (called Pratipada or Prathama) is the 12 angular degrees after syzygy. Amāvásyā is often translated as new moon since there is no standard term for the Moon before conjunction in English.

^ Most, Glenn W. Hesiod Volume 1: Theogony. Works and Days. Testimonia. Loeb Classical Library 57, Harvard University Press, Cambridge, Massachusetts, 2006.
^ Kolev, Rumen. The Babylonian Astrolabe. State Archives of Assyria Studies, Volume XXII, 2013.
^ Cole, Freedom. Amāvásya and Pratipad. Jyotish Digest, Vol XI, Issue II, April-Sep 2014

[1] Most, Glenn W. Hesiod Volume 1: Theogony. Works and Days. Testimonia. Loeb Classical Library 57, Harvard University Press, Cambridge, Massachusetts, 2006.

[2] Kolev, Rumen. The Babylonian Astrolabe. State Archives of Assyria Studies, Volume XXII, 2013.

[3] Cole, Freedom. Amāvásya and Pratipad. Jyotish Digest, Vol XI, Issue II, April-Sep 2014

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