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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.*?

— Bhāskara I

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More quotes by Bhāskara I

The science of calculations with unknowns is the source of the science of calculations with knowns.

Analysis (bija) is the intellect assisted by the various symbols that has now taken the name algebra (bijaganita).

The line which passes through Lanka, Vatsyapura, Avanti, Sthánesvara, and the "abode of the gods" [= Mount Meru = north pole] is the prime meridian [desantara vidhàyani, lit. the prime meridian for longitude differences.]

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