Om Vishnave Namah
> Dear Narasimha,
> Namaskara -
> Its been quite a while! In the future, I hope to be part of these
> discussions a bit more, as time and events change in my life.
> I have a question regarding the Antaradasa calculations for
> Ashtottari dasa given in JHora software, version 7.02. Since Ketu is
> the governor of this dasa, the sub-periods (Antaradasas) are supposed
> to run in reverse to the normal order of maha-dasa sequences. Thus,
> if Sun is the maha-dasa (as Sanjay writes in his book on Vimsottari
> and Udu Dasas), then the AD periods should run in reverse as Sun,
> then Venus, Rahu, Jupiter, Saturn, etc., which is the reverse
> sequence for Ashtottari dasas, culminating in the Sun's AD coming last.
> Now, in the most recent version of JHora (7.02), the AD's run
> sequentially forward in motion with the first AD the second planet
> forward sequentially, and the last one being the same as the maha
> dasa lord. This seems to be contrary to the principles of AD
> calculation given above and which are suggested by Sanjay.
> Is there another version of JHora that has this correction, or am I
> getting something wrong here?
> As always, thanks for your time and consideration.
> Best wishes,
However infrequent it may be, it is always nice to listen from a Vaishnava like you! I was thinking of sending a mail to you just this morning while driving to work, regarding Drigdasa.
Anyway, Sanjay taught me three methods of reckoning antardasas in nakshatra dasas.
Suppose mahadasas go as A, B, C, D, E, F and G. Suppose we want antardasas in mahadasa D.
Jupiter's method: Antardasas in D go as D, E, F, G, A, B and C.
Ketu's method: Antardasas in D go as E, F, G, A, B, C and D.
Rahu's method: Antardasas in D go as C, B, A, G, F, E and D.
In Jupiter's method, mahadasa lord gets the first antardasa, while he gets the last antardasa in the nodal methods. In Rahu's method, the basic order is reverse and it is normal in Jupiter's and Ketu's.
Jupiter's method is used in Vimsottari dasa. Ketu's method is used in Ashtottari dasa and Tithi Ashtottari dasa (of TP charts). Rahu's method is used in Shodasottari dasa.
Hope that answers your question.
Secondly, while reading BPHS a couple of months back, I discovered that our previous understanding of Drigdasa computation differed from an unambiguous teaching of Parasara. There are some differences and, in my view, what Parasara taught works better and makes more sense. I ran this by Sanjay too. This changes the calculations in Sanjay's own chart too.
I don't know at what stage your well-anticipated book is and whether you are even interested in finding out the differences or if it is too late. I leave it to you to decide whether to mention the other view in your book. If you want, I can write a mail about the differences and also give you a JHora with the Drigdasa computation as per Parasara's teachings.
May Jupiter's light shine on us,