View source for Vedas/Vedanga/Jyotiṣa Vedāṅga

===== '''Abstract''' =====
''Jyotiṣa, the Vedāṅga concerned with time, astronomy and calendrical calculation, occupies a central position in the Vedic intellectual system, as ritual performance is inseparable from precise temporal knowledge. Rooted in the injunction that the Vedas exist for the sake of yajña, Jyotiṣa functions as the “eye of the Veda”, enabling the correct determination of auspicious and inauspicious moments for sacrificial rites, festivals and major human undertakings (Makemson, 1991; Kak, 2000).'' 

''Although early Vedic astronomical literature has largely been lost, its principles survive in the compact yet foundational Vedāṅga Jyotiṣa, traditionally attributed to Lagadha and preserved in Ṛk and Yajus recensions. This discipline integrates astronomical observation, mathematical calculation and ritual necessity, reflecting a conception of time as both a measurable and a sacred force. Through instruments such as the Pañcāṅga, Jyotiṣa continues to structure religious, social and cultural life, demonstrating the enduring relevance of Vedic temporal science in both historical and contemporary contexts (Pingree, 1981; Achar, 2010).''