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

[Harry Spier]

Thank you Bill,
Exactly what I needed. A quick glance shows there is variation in the
definition of kalA.  Very useful is the index where I can see all the
references to kalA.
Much appreciated.
Harry Spier


On Sun, May 4, 2025 at 10:11 AM Bill Mak <bill.m.mak at gmail.com> wrote:

> 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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