[INDOLOGY] Unit of time in premodern Indian system of time units.

[Bill Mak]

Dear Harry,

This should be of help to you.

Hayashi, Takao. 2017. “The Units of Time in Ancient and Medieval India.” History of Science in South Asia 5 (1): 1–116. doi:10.18732/h2ht0h <https://doi.org/10.18732/h2ht0h>.

Best regards,

Bill



-- 
Bill M. Mak, PhD

Professor of History of Science

University of Science and Technology of China
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> On 3 May 2025, at 19:44, Harry Spier via INDOLOGY <indology at list.indology.info> wrote:
> 
> Dear list members,
> I've been asked to confirm the meaning of kalā in the premodern  Indian system of time units. 
>  According this wikipedia page https://en.wikipedia.org/wiki/Hindu_units_of_time
>  referring to the  Sūrya Siddhānta, 1 kalā = 30 kāṣṭhā approximately equal to 48 seconds but I've also been told that 1 kalā  is about one hour of the western time units. Can someone confirm the meaning of  kalā in the Indian system of time units . Was there more than one system of time units in general use in premodern India?
> Thanks,
> Harry Spier
> 
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