Sunday, January 19, 2020

Why Nilesh Oak’s dating of Surya Siddhanta is wrong.


Mr Nilesh Oak claims to have dated an ancient update of Surya Siddhanta based on a verse from Surya Siddhanta. Following account taken from my book Myth of 'The Epoch of Arundhati' of Nilesh Nilkanth Oak establishes why he is wrong in his claim.

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Kali Yuga date is Siddhanta based and with the 3rd Shaka Era in progress now, time computation is well laid out to be accurate to seconds. It involves only Gaṇita or mathematics and identifies time through mathematical calculation.  To cite an example an inscription found at Parthivasekara puram in Kanyakumari district about a grant given to a Vedic learning centre records the date in number of days such as “fourteen hundred thousand forty nine thousand and eighty seventh day having expired after the beginning of kali Yuga[1] This points out to the 9th century CE when deducted from the traditional date of Kali Yuga. Cross-referentially the king in whose name this has been issued is also found to belong to the 9th century. The kind of computation in number of days found in this inscription is a special feature of Jyothisha Siddhantas.

The Siddhanta gives theoretical exposition of the rules and concepts of different features of astronomy and time computation. The time period of the Siddhanta is given only mathematically by calculating from the beginning of the Kalpa, the Maha Yuga or the Yuga at the time of composition of the Siddhanta. Without knowing this basic lakshana of Siddhanta, Nilesh Oak has attempted to ‘date an ‘update’ of Surya Siddhanta in an article[2] and a video[3] recently. This is being highlighted here to show the lacuna in his understanding of the fundamentals in arriving at a date.

Picking out a verse in Surya Siddhanta that says that when seen from a place situated at no-latitude (niraksha desa samsthana) i.e. at equator, the pole star (Dhruva tara) is at the horizon,[4] Nilesh Oak has gone on to date the Surya Siddhanta (according to him, an update among many updates of Surya Siddhanta). Thinking that the verse refers to visual sighting of pole stars at the two ends (north and south) he ran his simulator to locate the time when pole stars were visibly present at the two horizons (north and south) and arrived at a date 12,000 BCE!

No Siddhanta gives a hint like this to find out the time of its composition nor does it give such a hint to derive any other date. Siddhanta being Gaṇita (mathematics), it only talks about calculations for deriving any time period.

The same idea of Surya Siddhanta used by Nilesh Oak to “date” Surya Siddhanta is also found in Siddhanta Shiromani by Bhaskara II, that “a man situated on the equator sees both the north and south poles touching (the north and south points of) the horizon.”[5] Would Nilesh Oak accept that Bhaskara II also lived in 12,000 BCE?

There need not be a star present at the point, but the location is Dhruva, a fixed point. The Siddhantas mention this as a universal statement. The same idea can be seen in modern astronomy in the context of Declination. The Wikipedia article on Declination gives the same idea.[6] Can it be used for deciding the date of writing the article?
From another verse in Surya Siddhanta[7] Nilesh Oak has claimed to have deduced the obliquity at the time of sighting the pole stars at the horizons, using it as an additional hint to substantiate the date he got from the simulator. That verse tells about the maximum extent of one fifteenth part of the circumference of the earth, i.e. 24˚that the Sun goes on either side of the equator (solstices). That is a standard statement and the calculation of rising periods, ascensional differences and other details are given for that limit. Bhaskara II mentions this in his book besides giving methods to derive the same for latitudes less than 24˚N.[8] By Nilesh Oak’s claims, Siddhanta Shiromani of Bhaskara II can also be traced to 12,000 BCE by interpreting that the axial tilt was 24˚ when Bhaskara II wrote his Siddhanta.

This ‘research’ of Nilesh Oak exposes how he picks out his evidences or Basic sentences without recourse to the admissibility of them from the text. His first step is to interpret a verse in the way he thinks is right, without any background knowledge of the fundamentals. The next step is to check it in the simulator. Then the research is done. The same pattern laid already in the discovery of the “Epoch of Arundhati” is replicated in other ‘researches’.

The Surya Siddhanta dating ‘research’ is highlighted here to show how Nilesh Oak is woefully lacking in fundamentals. Be it the tradition of Arundhati or methodology of Popper or Patanjali or nimitta of Samhita or Siddhanta to understand the calculation of time, Nilesh Oak can be seen looking through a limited ‘window’ to claim success.

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Another issue with his SS article:

In the India Facts article by Mr Oak on Surya Siddhanta
( http://indiafacts.org/ancient-updates-to-surya-siddhanta/) he has written that "that the Earth’s obliquity was indeed 24 degree in the year 2900 BCE and 12000 BCE!" That means the earth reached 24 degree tilt in 2900 BCE and before that in 12k BCE. Means the earth had oscillated within a span of 9000 years! His software shows that span only and not 26K or 41K span. Vedic wisdom says that the span was 7200 years. The difference was due to precession calibrated from the present value in the softwares. The rate of precession is not constant at all times. That is why our seers had mentioned in terms of time and degrees. This limited precession is explained in my video https://www.youtube.com/watch?v=qi6xc8HPfR4&t=2448s



[1] Travancore Archaeological Series, Volume I, page 30.
[2] “Ancient Updates to Surya Siddhanta”, Nilesh N Oak and Rupa Bhatty, 19-03-2019 http://indiafacts.org/ancient-updates-to-surya-siddhanta/
[4] Surya Siddhanta 12- 43 &44
[5] Siddhanta Shiromani. 3-48, Translation by Pundit Bapu Deva Sastri.
[7] Surya Siddhanta 12-68
[8] Siddhanta Shiromani. 9-19 & 20