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Vasishtha Siddhanta is one of the earliest astronomical systems in use in India, which is summarized in Varahamihira's Pancha-Siddhantika . It is attributed to sage Vasishtha and claims a date of composition of 1,299,101 BCE.[1] The original text probably dated to the 4th century, but it has been lost and our knowledge of it is restricted to Varahamira's account. Alberuni ascribes the work to Vishnuchandra. <
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