"On any day calculate the longitude of the Sun and the Moon for sunrise or sunset without applying the longitude correction, and therefrom find the time (since sunrise or sunset), in ghatis, of rising or setting of the Moon; and having done this, note the corresponding time in ghatis from the water clock. From the difference, knowledgeable astronomers can calculate the local longitude in time.*?"
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Astronomers from India7th-century Indian mathematiciansYear of birth uncertainYear of death uncertainScientists from Gujarat
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Bhāskara I
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