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Vedanga Jyotisha (Samskrit : वेदाङ्गज्योतिषम्) is described as one of the six branches of knowledge called [[Shad Vedangas (षड्वेदाङ्गानि)|Shad Vedangas]]. Vedangas are the ancillary subjects of the Vedas and help in understanding the processes associated with the life in Vedic times. The purpose of the Jyotisha was to fix suitable times for performing different Yajnas and this involves knowledge of astronomy. Vedanga Jyotisha by Lagadha is a crucial text in giving us the picture of development of Astronomy in ancient Bharatavarsha. The text can be considered as the records of the essential astronomical knowledge needed for the day-to-day life of the people of those times. Although the text is said to belong to later date (1400 B.C.), the subject is said to be the culmination of the knowledge developed through years of observations, accumulated over thousands of years prior to 1400 B.C.[[File:Jyotisha Sarwang.png|thumb|550x550px|'''Study of Astronomical Sciences''']]In modern common parlance, the word Jyotisha is used to mean predictive astrology (Phalita Jyotisha), however in Vedangas the word Jyotisha is associated with the science of Astronomy which includes mathematics (Ganita) also. This article primarily refers to Jyotisha as a part of Vedangas, hence the term Vedanga Jyotisha is used (which is also the name of the valuable text given by Maharshi Lagadha). Mathematics or [[Ganita Shastra (गणितशास्त्रम्)]] was regarded as a part of Vedanga Jyotisha as a discipline.<ref name=":1">Balachandra Rao, S. (2014) Indian Astronomy. Concepts and Procedures. Benguluru : M.P. Birla Institute of Management</ref>

Vedanga Jyotisha (Samskrit : वेदाङ्गज्योतिषम्) is described as one of the six branches of knowledge called [[Shad Vedangas (षड्वेदाङ्गानि)|Shad Vedangas]]. Vedangas are the ancillary subjects of the Vedas and help in understanding the processes associated with the life in Vedic times. The purpose of the Jyotisha was to fix suitable times for performing different Yajnas and this involves knowledge of astronomy. Vedanga Jyotisha by Lagadha is a crucial text in giving us the picture of development of Astronomy in ancient Bharatavarsha. The text can be considered as the records of the essential astronomical knowledge needed for the day-to-day life of the people of those times. Although the text is said to belong to later date (1400 B.C.), the subject is said to be the culmination of the knowledge developed through years of observations, accumulated over thousands of years prior to 1400 B.C.[[File:Jyotisha Sarwang.png|thumb|550x550px|'''Study of Astronomical Sciences''']]In modern common parlance, the word Jyotisha is used to mean predictive astrology (Phalita Jyotisha), however in Vedangas the word Jyotisha is associated with the science of Astronomy which includes mathematics (Ganita) also. This article primarily refers to Jyotisha as a part of Vedangas, hence the term Vedanga Jyotisha is used (which is also the name of the valuable text given by Maharshi Lagadha). Mathematics or [[Ganita Shastra (गणितशास्त्रम्)]] was regarded as a part of Vedanga Jyotisha as a discipline.<ref name=":1">Balachandra Rao, S. (2014) Indian Astronomy. Concepts and Procedures. Benguluru : M.P. Birla Institute of Management</ref>

{{#evu:https://www.youtube.com/watch?v=BK40-hMWaT0&feature=youtu.be

{{#evu:https://www.youtube.com/watch?v=BK40-hMWaT0&feature=youtu.be

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Astronomy is the main subject of the text Vedanga Jyotisha. Even during Rigvedic times astral sciences were highly developed where people acquired knowledge of the movement of sun and moon for knowing the seasons which was important in performing yajnas such as Darsapurnamasa and Chaturmasya. Ancient people had knowledge of the calculations for eclipses, full moon (Amavasya) and new moon (Purnima) days, of nakshatras (stellar constellations) as it is required for determining the commencement of specific Yajnas.<ref name=":1" />  

Astronomy is the main subject of the text Vedanga Jyotisha. Even during Rigvedic times astral sciences were highly developed where people acquired knowledge of the movement of sun and moon for knowing the seasons which was important in performing yajnas such as Darsapurnamasa and Chaturmasya. Ancient people had knowledge of the calculations for eclipses, full moon (Amavasya) and new moon (Purnima) days, of nakshatras (stellar constellations) as it is required for determining the commencement of specific Yajnas.<ref name=":1" />