Dasa Subperiod Calculation- - -SUMMING UP

[Guest guest]

Dear Sri Anant Raichur,

 

Sincerely thank you very much for your valuable remark to

close our second round discussion of 360 D/Y vs 365.25 D/Y as you did

before to stop the first round dicussion in Msg #2076. With your

outline let me present the summing up of the discussion for

information of the members.

 

 

With highest regards,

 

Tin Win

 

 

 

 

 

360 D/Y vs 365.25 D/Y DISCUSSION

 

1. DEFINATION OF A DAY

 

a/ the definition starts with the day. One sunrise to next sunrise.--

- (RAICHUR, Msg #2978)

 

b/ the interval of time between successessive occasion of sun rise.---

(KSK, Reader I, p 97)

 

c/ From a study of the Vedas and astronomical texts we find that the

Sun is the basis for measuring time. That the year is based on the

seasons which is again based on the movement of the Sun. --- (365.25

D/Y advocate JYOTISH SASTRI, Astrlogical Magazine<AM>, October &

November 2000)

 

 

2. NAMES OF A YEAR

 

2. (1) NAMES OF 360 D/Y

 

a/ (i) SAVAN YEAR, (ii) CIVIL YEAR --- (RAICHUR, Msg #2978)

 

b/ SAVANA MANAM --- (KSK, Reader I, p 97);

 

c/ SAVANA YEAR ---(JYOTISH SASTRI, AM, Oct & Nov 2000)

 

d/ neither a SOLAR nor a LUNAR nor a LUNI-SOLAR year--- (360 D/Y

advocate N. SUNDARA RAJAN, AM, Jan 2004, quoting B. V. Raman's Graha

and Bhava Balas saying --- a year and month of 360 and 30 days

respectively)

 

2. (2) NAMES OF 365 D/Y

 

a/ (i) SOLAR YEAR, (ii) SOURAMAN--- (RAICHUR)

 

b/ SOURA MANAM--- ( KSK, Reader I, p 97-98)

 

c/ ENGLISH CALENDAR YEAR ---(N. SUNDARA RAJAN)

 

d/ SOLAR YEAR --- (JYOTISH SASTRI)

 

 

 

3. DEFINATION OF 360 & 365 D/Y

 

3. (1) DEFINATION OF 360 D/Y

 

a/ 360 such days make up the " savan year " . This is called the civil

year.--- (RAICHUR)

 

b/ 360 days in Soura Manam ---(KSK, Reader I, p 97)

 

c/ to measure a year by 360 days--- (JYOTISH SASTRI);

 

d/ 360 days (360 tithis or 12 lunar month)--- (N. SANDRA RAJAN)

 

e/ The unspoken assumption is that a 360 day year is somehow " Lunar "

which is not 360 days long but rather 360 tithis (lunar days) long,

which is about 354.36 solar days long.--- (JYOTISH SASTRI)

 

e/ Other Quotations

 

(i) In the Vedas and Puranas there is mention of a 360 day year the

following quotes speak of this:

" The wheel (of time) having twelve spokes revolve round the heavens,

but it does not wear out. Oh Agni! 720 pairs of sons ride this

wheel. " Rg Veda Samhita 1.164.22 (BJS vol. 1, pp. 17-18.) " Twelve

spoke boards, one wheel, three navels. Who understands these? In

these are 360 Shankus (rods) put in like pegs which do not get

loosened. " Rg Veda Samhita 1.164.48 (BJS vol. 1, p. 18.) " A year has

360 days, a year has 720 days and nights together. " Aitareya Brahmana

7.17 (BJS vol. 1, p. 20.)

The 360 day year doesn't refer to the length of a solar year (365.25

days) or lunar year (360 tithis, about 354.36 solar days). The year

of 360 days is called a Savana year and used strictly for sacrificial

purposes particularly for the Soma-yajna as explained in the

following quote from Dikshit's Bharatiya Jyotisha Sastra (BJS).

 

Source: Bharatiya Jyotish Sastra (BJS-History of Indian Astronomy)

published by the Government of India ---(JYOTISH SASTRI's article)

 

(ii) The problem arises because of not understanding the intricacies

of the luni-solar calendar and making the very serious blunder of

equating tithi with day. A tithi is not equal to a solar day, and

varies in length from about 19 to 26 hours depending on the velocity

of the Moon. So taking this misconception a step further, people who

were not steeped in Vedic calendric tradition began thinking that

since old text books and manuals used by traditional Panditas talked

of years with 12 months of 30 tithis and a year of 360 tithis this

must be the same as years with 12 months of 30 days and 360 day

years. This, then, is how we have become entangled in a useless

controversy of whether the Mahadasa should be measured in 360 day

years or 365 day years. This is like comparing apple with oranges,

you cannot equate a tithi with a day. By doing so you get a situation

in which the two systems diverge with time. ---(JYOTISH SASTRI's

article)

 

 

3. (2) DEFINATION OF 365 D/Y

 

a/ The other is the Solar Year. " Souraman " . The months are fixed on

Basis of the Sun's entry into each Rashi. Thus months are named as

MESHA, Vrishabha, etc. This year naturally has 365.2425 days.---

(RAICHUR)

 

b/ 365.25 days (interval of time taken by Sun to leave any one

position in the Zodiac and again reach the same position)--- (KSK,

Reader I, p 97);

 

c/ to avoid complexity in calculation ---365 d/y not considered---

360 d/y accepted---if so particular— - 365 days not a year--- have to

go for another 6h-9m-9.50 sec. ---( K.R. KAR, KP Anuual 2004, p 69)

 

c/ to measure a year by 325.2 days (A solar year is the length of

time from one vernal equinox to the next.)--- Confusion arose after

the British introduced the Gregorian calendar into India, then Lunar

tithis became mistakenly equated with Solar days and the Lunar year

of 360 tithis became confused with a solar year of 360 days. Inspite

of this confusion pre-British classics in Vedic astrology such as

Phala Dipika clearly state that the year for Mahadasa calculation is

365 day year.---(JYOTISH SASTRI)

 

d/ 365.25 days (the time taken by the Sun to complete one round of

the Zodiac) ---(N. SANDARA RAJAN)

 

e/ 365.2425 days (KPASTRO 2.0 and JAGNANNATHA HORA 7.02)

 

f/ Other Quotations

 

(i) Length of the year according to different Vedic astronomical

texts (BJS vol. 2, p. 13)

 

--------------------------- days------------ ghati---

pala---- vipala- prativipala

Vedanga Jyotisa------- 366

Pitamaha Siddhanta--- 365----21------ 25

Pulisa Siddhanta------ 365---- 15------ 30

Surya Siddhanta------- 365---- 15------ 31------ 30

 

Romaka Siddhanta---- 365---- 14----- 48

1st Arya Siddhanta--- 365---- 15------ 31------ 15

 

Brahmagupta Siddhanta------- 365---- 15------ 30------

22------ 30

2nd Arya Siddhanta-- 365---- 15----- 31------ 17------

06

 

[1 ghati = 24 minutes = 60 pala, 1 pala = 60 vipala, 1 vipala = 60

prativipala]

 

Source: Bharatiya Jyotish Sastra (BJS-History of Indian Astronomy)

published by the Government of India (In Jyotish Satri's article)

 

 

4. SIGNIFICANCEOF 360 D/Y VERSUS 365 D/Y

 

a/ The Savan yaer as such is not in use in any part of the world

now. It is theGregorian Year of 365.2425 days that is universally

used. The other is the PureLunar Year of about 340 days. The

panchangs in India correct this and bring itin line with the solar

year, by adding one ADHIKA MASA every 3 years or so.The followers of

Islam, do not make any such adjustment. So their years arealways less

than the Georgian, or Panchang Years.--- (RAICHUR)

 

b/ If 360 D/y rather than 365 D/y is used for " MAHADASA "

calculation, the gap between them would become more divergent with

dasa period---6.25 days (365.25-360) after 1 year, 31.5 days (6.25x6)

after 5 years,-----about 6 months after 35 years, a whole year after

70 years;--- (JYOTISH SASTRI)

 

c/ Taking 365.25 D/Y to calculate 120 years of Vimshottari dasa, the

total number of years will increase by 630 days (6.5x120)--- with

compared to the maximumlongevity of 43200 days (360x120)----because

each solar year (365.25 D/Y) exceeds the Vimshottari 360 D/Y by 5.25

days.--- (N. SANDARA RAJAN)

 

c/ In AM, Oct 1973, Hira Gulrajani advocated 360 D/Y ---saying

there would be cumulative difference by as much as one month for

every 6 years of age of the native between the indicated operative

period under Vimsottari and that of what he terms as actual period.

If we are to go with him in his line of thinking, it would turn out

that a native may have to celebrate his 72 birthday even while he has

yet to complete his 71st year under Vimsottari reckoning.---- (H.R.

SHANKAR, AM, Jan 1974/ JYOTISH SASTRI' s article)

 

e/ The vimshottari dasha cycle is of 120 years duration. In terms of

solar years this would amount to 43830 days, whereas, using the 360

days years, this amounts to 43200 days, which is 1/3600th of 432000

years, the total duration of kaliyuga, could be a coincidence,

perhaps! --- whether to take a year for vimshottari dasha

determination as the solar 365 day one or the civil (savanamana) 360

day year. Adopting either creates an incremental discrepancy between

the dasha periods used by proponents of either, this can amount to

more than six months by the time one is 40 years old----(360 D/Y

advocate ROHINI RAJAN)

 

f/ The real issue being discussed till the cows come home is whether

to take 365 D/Y (365.25x120=43830d for 120y) or 360 D/Y (365x120=

43200d) because the difference is accelerating from 5.25 for 1y to

63od for 120y. As per simple arthmetics, in 365.25 D/Y-Gregorian

calender, Sun Mahadasa is legged behind about 6x5.25= 31.5d; Moon

Mahadasa 10x5.25= 52.5d and so on.

 

g/ Out of total 120 years shares are given 6y to Sun, 10y Moon, 7y

Mars, 18y Rahu, 16y Jupiter, 19y Sturn, 17y Mercury, 7y Ketu and 20y

to Venus. These shares hold the same propotion in all periods, Dasha,

Bhukti, Anthara, Sookshama and so on (B. SURYANARAIN RAO), giving

Bhukti= Dasha period (Bhukti /120); Anthara= D (B/120)

(Anthara /120); Sukshama= D (B/120) (A/120) (Sukshama/120) and so

on, e.g.. Venus Dasa/ Saturn Bhukti= 20 (19/120)= 3.166667= 3y +

0.166667x12=3y:2m; Venus Dasa/ Satrun Bhukti/Jupiter Anthara= 20

(19/120)(16/120)= 0.422222y= 0.422222x12= 5m:0.066666x30d= 5m:2d;

Ven/Jup/Rahu/ Sat= 20(16/120)(18/120)(19/120)= 0.063333yx 12x30= 23d;

Mer/Ven/Sat/Jup/Mer= 17(20/120)(19/120)(16/120)(17/120)=

0.0084737yx12x30= 3d or up to 6th level Mer/Ven/Sat/Jup/Mer/ Rah=

0.0084737(18/120)x12x30= 11 hours and so on. This simple rathematics

will give the same durations of Bhukti, Anthara, Sukshama and so on

in any dasa duration table, KSK Reader, KP Emphemeris, Lahiri

Emphemeris, any astrology text book of J. N. Bhasin, James T. Braha,

David Frawley, Hart de Foue & Robert Svoboda, B.V. Raman, All India

Astrological Services etc. If anything different from this simple

calculations, there is an error for correction not for discussion. In

other words, all tables should be the same.

 

h/ Using 12m-a-year and 30d-a-month is 360 D/Y is taken for

convenience and for calculation of sub sub (DBAS) periods as mentined

by KSK. This 360D/Y-based DBAS durations are used in any of 360 D/Y

& 365 D/Y options and there are no different tables or formulars,

like KP or non-KP because this is mathematics. That is why

application of 360D/Y-based sub sub tables does not mean using a 360

D/Y as long as 356 D/Y is applied in Mahadasa calculation. Thus DASAS

TO BE ENJOYED BY VIDUN K VIDYADHARAN, VIMSOTTARI DASAS ---

BHUKTIES-- calculated by -- THE METHOD USED IS THE 1 YEAR =12

MONTHS: 1 MONTH=30 DAYS--- (Msg 2970) is not a simluation of 360 D/Y

option. It is a 365 D/Y option because 6y for Sun, 10y for Moon are

taken in full in 365.25-D/Y-based Gregorian calendar without

shortening a 5.25-day-year difference.

 

 

V—A—WHICH ONE, 360 OR 365 D/Y, TO APPLY ?

 

a/ In one of the Granthas relied upon, it is advised to use this

year only forududasa (vimsottari dasa). --- (RAICHUR)

 

b/ Only Soura Manam of 365.25 days alone is to be adopted or must eb

taken---for Udu dasa.----(KSK, Reader I, p 97)

 

c/ In this system (Vimsottari dasa) only 30 days comprise a month and

a year of 365 days.---( BEPIN BEHARI)

 

d/ Usha-Shashi in their " Hindu Astrological Calculations " indicate

that the astrological year that is to be used for year lord and dasha

determinations is one that has 12 months of 30 days each, ---quoting

this as Surya Siddhanta's recommendation. (ROHINI RAJAN's article)

 

e/ PERSONAL PREFERENCE - that is the bottom line - no matter WHAT

numbers you use to cut the cards. My personal preference is to use

365.25 days – no matter " who says what " , but this preference is based

solely on my ability to successfully line up events and see things in

a chart more clearly (for myself personally) using 365.25 rather than

360 days. Is it right? Who knows and who cares – as long as it works

for me… So my point is that the bottom line is that we ALL need to

use what WORKS for us as INDIVIDUAL astrologers, while simultaneously

respecting the personal preferences of others. (Msg #2081)

 

 

V—B-- DOES 360 D/Y GIVE " BETTER " RESULTS THAN 365 D/Y ?

 

a/ Some Vedic asrtologer's say they are getting better results with

Savan Year andan ayanams Laheri-53 minutes .--- (RAICHUR)

 

b/ N. Sundara Rajan and Rohini Ranjan say so.

 

c/ All his successful predictions have been given on the basis of 365

days only and Sadasiva Giri illustrates 360 d/y give s him better

results.--- (KN Rao: Timing Events Through Vimshottari Dasha, Preface

to the Second Edition)

 

d/ No statistical study or any other method has ever been done which

could prove that the 360 d/y should be applied in Vimsottari

Mahadasa. Ultimately it all boils down to the " opinion " of a small

group of astrologers that their method is better. All the great

Panditas that I studied with, in North, East and South India all used

the regular solar year of 365 days, and so do the vast, over-

whelming, majority of Vedic astrologers. ---(JYOTISH SASTRI)

 

 

VI--CONCLUSION

 

1) The real issue is whether to take 360 days or 365 days in a year

with a difference of 5.25 per year to 630 day for the whole 120

years.

 

2) 360 D/Y Vimsottari dasa results of Jagannantha Hora 7.02 (Sanjay

Rath's school), Jyotish Tools (V.K. Choudhry's SA school), KPAstro

2.0, Fortune Discoverer Ver.6.0, Goravani Jyotish, Parashara Light

6.1, Astroworks, Shri Jyothi Star and manual calculations have been

seen generally the same. (Msg # 2036, 2823, 2865, 2916, 28807 & 2953)

Nothing is wrong with SWs as per their setting of " 360 days in a

year " and " 360x120=43200 days " for the whole 120 years dasa period

as advocated by 360 D/Y advocates.

 

3) As per basic mathematics of 365.25-360= 5.25d difference per year,

360 D/Y Mahadasa durations are shortened by that rate of difference

with compared to 365.25 D/Y option or in terms of 365.25-day-year

Gregorian calender. Also as per simple ratio rathemetics, all tables

of dasa sub sub durations are the same, and there is no KP table or

non-KP table because it is mathematics.

 

4) Application of 360D/Y-based sub sub tables does not mean using a

360 D/Y calculation option as long as 356 D/Y is applied in Mahadasa

calculation.

 

5) Almost all East and West vedic astrologers K.S. Krishnamurti and

KP astrolgers , B.V. Raman, K.N. Rao, Bepin Behari, Sanjay Rath, V.

K. Choudhry, J.N. Basin, K.S. Charak, Sumeet Chugh, Richard Houck,

James T. Braha, David Frawley, Hart de Foue , Robert Svoboda, A.K.

Kar, M.N. Kedar, Jagdish Maheshri, M.S. Mehta, C. S. Patel, P.V.R.

Rayudu, Chakrapani Ullal and many others have used 365 D/Y

Vimshottari dasa without giving attention to the aruments of 365 D/Y

advocates.

 

5) It will be very interesting to know the names of 360 D/Y

astrologers (with their credit of articles and books) other than Hira

Gulrajani, N. Sundara Rajan, Rohini Ranjan, Sadasiva Giri who are

found until now.

 

 

 

 

REFERENCES

 

1) G.S. Agarwal: Practical Vedic Astrology

2) All India Astrological Services, " Know your Dasha "

http://www.hinduastrology.org/learnastrology/dasha.asp

3) K.S. Charak: Yogas in Astrology; Subtlesties of Medical Astrology,

pp 54-56

4) Sumeet Chugh: Timing of Events, pp 56-64

5) Richard Houck: Astrology of Death, p 54

6) B. Bala: PROF. K. S. KRISHNAMURTI'S Advance Emphemeris

for 1991 to 2000 (Table of Duration of Dasa, Bhukti and Anthara

in Vimshottari Dasa, pp 19-23)

7) J. N. Bhasin: Art of Prediction, pp 222-226

8) Bepin Behari, The Timing of Events

9) James T. Braha: Ancient Hindu Astrology for the Western

Astrologer, p 223

10) Sandy Crowther, Msg #2081

11) David Frawley: Astrology of the Seers, p 175-176

12) Hart de Foue & Robert Svoboda: Light on Life, pp 323-325

13) A.K. Gour: The Celestial Delivery Boy, TRANSIT, pp 118-135

14) K.R. Kar, " In Quest of Origin of Parasar,s Vimshottary Dasa-

Period " , KP Annual 2004

15) M.N. Kedar: Judgement of Bhavas & Timing of Events through Dasa

and Transit, pp 97-98

16) K.S. Krishnamurti, KP Reader I

17) Jagdish Maheshri: It's All in Timing, pp 74-75

18) M. S. Mehta: Planets and Travel Abroad, pp 60-61

19) Chandulal S. Patel: Predicting Through Navamsa & Nadi Astrology,

pp 4-5

20) ANANT RAICHUR, Msg #2978

21) B.V. Raman: Hindu Predictive Astrology, p 55-56

22) Rohini Ranjan, " For Beginners in Jyotish-3 "

http://www.boloji.com/astro/00308b.htm

23) N. Sundara Rajan, " Dasa-Bhukti Computation- 360 or 365 Days " ,

Astrological Magazine, January 2004

24) b. Suryanarain Rao: Strijataka or Female Horoscopy, 1964, p 154

http://www.sulekha.com/content/epress/samples/EB_RAMAN_015_S.pdf

25) K.N. Rao: Timing Events Through Vimshottari Dasha

26) Jyotish Sastri, " How Long is a Year In Vimsottari Mahadasa? " , Oct

& Nov 2000 Astrological Magazine

http://www.shyamasundaradasa.com/Shyama_site/what_is_jyotish/how_long_

year/how_long_year_1.htm

 

 

 

 

 

, anant raichur <anant_1608>

wrote:

> This discussion of 360 days vs 365.25 days has been carried on in

the other

> . vedic astrology.

>

> Ther the definition starts with the day. One sunrise to next

sunrise.

>

> 360 such days make up the " savan year " . This is called the civil

year.

>

> The other is the Solar Year. " Souraman " . The months are fixed on

Basis of the

>

> Sun's entry into each Rashi. Thus months are named as MESHA,

Vrishabha, etc.

>

> This year naturally has 365.2425 days.

>

> In one of the Granthas relied upon, it is advised to use this year

only for

>

> ududasa (vimsottari dasa).

>

> Some Vedic asrtologer's say they are getting better results with

Savan Year and

> an ayanams Laheri-53 minutes .

>

> The Savan yaer as such is not in use in any part of the world now.

It is the

>

> Gregorian Year of 365.2425 days that is universally used. The other

is the Pure

>

> Lunar Year of about 340 days. The panchangs in India correct this

and bring it

>

> in line with the solar year, by adding one ADHIKA MASA every 3

years or so.

>

> The followers of Islam, do not make any such adjustment. So their

years are

> always less than the Georgian, or Panchang Years.

>

> I hope this is of help

>

> good luck

>

> --- Vaidun Vidyadhar <vvidya@o...> wrote:

>

> > Dear TW,

> >

> > As per Prof KSK, the length of the 360 days/year and 365.2422

days/year are

> > the same. That is my understanding. It is just that we divide

the solar

> > year by 360 in one case (for ease of calculation) and the

365.2422 in the

> > other case if one wants to obtain the correct date in the

Gregorian

> > calendar.

> >

> > Best regards.

> >

> > Vaidun Vidyadhar

> > 1 / 94 Marius Street

> > Tamworth, NSW 2340

> > Australia

> > Tel: 61-2-67 668428 (home)

> > Mobile: 0414 870 083

> > Email: <vvidya@o...> vvidya@o...

> >

> >

> >

> >

> >

> > _____

> >

> > tw853 [tw853]

> > Sunday, 13 March 2005 1:51 PM

> >

> > Re: Dasa Subperiod Calculation

> >

> >

> >

> >

> > Dear Vaidun,

> >

> >

> > In Proceduer -3 explained by Rangarajan, the full 3 years are

365.25

> > D/Y and the portion 0.7 is converted by 360 D/Y which is

consistent

> > with Guruji KSK saying " " for convenience and for easy calculation

of

> > sub sub periods 360 " and 1-1-2000 & 10th Sept 2003 dates are

> > according to Gregorian calender which has been used parctically.

> >

> > Best regards,

> >

> > tw

> >

> >

> >

> >

> > days are taken.---But 365.25 days must be taken "

> > , " Vaidun Vidyadhar "

<vvidya@o...>

> > wrote:

> > > Dear Rangarajan,

> > >

> > > Procedure - 3 is what Prof KSK taught in his Readers.

Following his

> > > methodology one will get 13 Sep 2003.

> > >

> > > The calculation for this is as follows:

> > > Dasa sub period starts on 1-1-2000 at 0000 hours (midnight)

> > > Duration of dasa sub period = 3.7 years

> > > 0.7*360 = 8.4 months

> > > 0.4*30 = 12 days

> > > So duration of dasa sub period =3 years, 8 months and 12 days

> > > Add the above to the start date of dasa sub period to get end

of

> > dasa sub

> > > period,

> > > (A) We get 13-9-2003 at 0000 hours (midnight)

> > >

> > > It must however be noted that the date indicated above (13-9-

2003)

> > is a date

> > > in the 360 days per year calendar.

> > >

> > > To get the ACTUAL date in the Gregorian calendar, the

calculations

> > will be:

> > > Dasa sub period starts on 1-1-2000 at 0000 hours (midnight)

> > > Duration of dasa sub period = 3.7 years

> > > 0.7*365.2422 = 255.66954 days

> > > 0.66954*24 = 16.06896 hours

> > > 0.06896*60 = 4.1376 minutes

> > > 0.1376*60 = 8.256 seconds

> > > So duration of dasa sub period =3 years, 255 days, 16 hours, 4

> > minutes and

> > > 8.256 seconds

> > > Add the above to the start date of dasa sub period in the Real

Time

> > > Gregorian calendar to get end of dasa sub period,

> > > (B) We get 11-9-2003 at 1604 hours and 8.256seconds

> > >

> > > Note in the above calculations, (A) - (B) = 1 day, 7 hours, 55

> > minutes and

> > > 51.744 seconds

> > >

> > > The difference between the date obtained in the 360 days per

year

> > calendar

> > > and the Real Time Gregorian calendar can NEVER be more than 2

> > days. In this

> > > case, it is a little over one day. Considering that the birth

time

> > can be a

> > > few minutes off, either way, this can put the dasa sub period

start

> > and end

> > > dates off by a corresponding few days. So an error of 1 day, 7

> > hours

> > > (something) is negligible and can be overlooked.

> > >

> > > Regards.

> > >

> > > Vaidun Vidyadhar

> > > 1 / 94 Marius Street

> > > Tamworth, NSW 2340

> > > Australia

> > > Tel: 61-2-67 668428 (home)

> > > Mobile: 0414 870 083

> > > Email: <vvidya@o...> vvidya@o...

> > >

> > >

> > >

> > >

> > >

> > > _____

> > >

> > > Rangarajan Krishnamoorthy [ranga@m...]

> > > Saturday, 12 March 2005 4:19 PM

> > >

> > > Dasa Subperiod Calculation

> > >

> > >

> > >

> > > Dear Members,

> > > I would like to draw your attention to different ways of

performing

> > > the dasa calculation.

> > >

> > > Assume a dasa subperiod starts on 1-1-2000. Assume also that it

> > > lasts 3.7 years. Let N be the number of days per year (360,

365.25,

> > > etc.). The problem is to find out the ending date of this

> > subperiod.

> > > There are (at least?) three strategies to adopt here. I will

show

> > > the working, assuming N = 360.

> > >

> > > Procedure -1:

> > > -------------

> > > 1) Convert the duration into number of days. Since the duration

is

> > > 3.7 years, multiply this by 360. D = 1332 days.

> > > 2) Add the number of days so arrived at to the starting date.

That

> > > is, add 1332 days to 1 - 1 - 2000. This gives us 25th Aug 2003.

> > >

> > > Procedure - 2:

> > > --------------

> > > 1) Add completed (whole) years to the starting date. 2000 + 3 =

> > > 2003, date is 1 - 1 - 2003

> > > 2) Convert fractional year to days. Multiply 0.7 by 360. D =

252

> > days

> > > 3) Add this to (1). 1-1-2003 plus 252 days gives 10th Sept 2003

> > >

> > > Procedure - 3:

> > > --------------

> > > 1) Add completed (whole) years to the starting date. 2000 + 3 =

> > > 2003, date is 1 - 1 - 2003

> > > 2) Convert fractional years to months. Multiply 0.7 by 12. M =

8.4

> > > 3) Add completed months to (1). 1-1-2003 plus 8 months gives

1st

> > > Sept 2003.

> > > 4) Calculate the average number of days in a month. This comes

to

> > > N/12, i.e., 360/12 = 30.

> > > 5) Convert the fractional month to days. Multiply 0.4 by 30.

This

> > > comes to 12.

> > > 6) Add this to (3). The end date comes to 13th Sept 2003

> > >

> > > Thus, for the same " 360 days per year " option, depending on

which

> > of

> > > the three procedures you follow, the end date is different.

> > >

> > > I think we have been debating over the past few days as to

which of

> > > these is appropriate.

> > >

> > > Regards,

> > > Rangarajan

> > >

> > >

> > >

> > >

> > >

> > >

> > >

[Guest guest]

Dear tw853

 

Avery good summation. This should be loaded into the file sections of the

 

group.

 

good luck

--- tw853 <tw853 wrote:

 

>

>

>

> Dear Sri Anant Raichur,

>

> Sincerely thank you very much for your valuable remark to

> close our second round discussion of 360 D/Y vs 365.25 D/Y as you did

> before to stop the first round dicussion in Msg #2076. With your

> outline let me present the summing up of the discussion for

> information of the members.

>

>

> With highest regards,

>

> Tin Win

>

>

>

>

>

> 360 D/Y vs 365.25 D/Y DISCUSSION

>

> 1. DEFINATION OF A DAY

>

> a/ the definition starts with the day. One sunrise to next sunrise.--

> - (RAICHUR, Msg #2978)

>

> b/ the interval of time between successessive occasion of sun rise.---

> (KSK, Reader I, p 97)

>

> c/ From a study of the Vedas and astronomical texts we find that the

> Sun is the basis for measuring time. That the year is based on the

> seasons which is again based on the movement of the Sun. --- (365.25

> D/Y advocate JYOTISH SASTRI, Astrlogical Magazine<AM>, October &

> November 2000)

>

>

> 2. NAMES OF A YEAR

>

> 2. (1) NAMES OF 360 D/Y

>

> a/ (i) SAVAN YEAR, (ii) CIVIL YEAR --- (RAICHUR, Msg #2978)

>

> b/ SAVANA MANAM --- (KSK, Reader I, p 97);

>

> c/ SAVANA YEAR ---(JYOTISH SASTRI, AM, Oct & Nov 2000)

>

> d/ neither a SOLAR nor a LUNAR nor a LUNI-SOLAR year--- (360 D/Y

> advocate N. SUNDARA RAJAN, AM, Jan 2004, quoting B. V. Raman's Graha

> and Bhava Balas saying --- a year and month of 360 and 30 days

> respectively)

>

> 2. (2) NAMES OF 365 D/Y

>

> a/ (i) SOLAR YEAR, (ii) SOURAMAN--- (RAICHUR)

>

> b/ SOURA MANAM--- ( KSK, Reader I, p 97-98)

>

> c/ ENGLISH CALENDAR YEAR ---(N. SUNDARA RAJAN)

>

> d/ SOLAR YEAR --- (JYOTISH SASTRI)

>

>

>

> 3. DEFINATION OF 360 & 365 D/Y

>

> 3. (1) DEFINATION OF 360 D/Y

>

> a/ 360 such days make up the " savan year " . This is called the civil

> year.--- (RAICHUR)

>

> b/ 360 days in Soura Manam ---(KSK, Reader I, p 97)

>

> c/ to measure a year by 360 days--- (JYOTISH SASTRI);

>

> d/ 360 days (360 tithis or 12 lunar month)--- (N. SANDRA RAJAN)

>

> e/ The unspoken assumption is that a 360 day year is somehow " Lunar "

> which is not 360 days long but rather 360 tithis (lunar days) long,

> which is about 354.36 solar days long.--- (JYOTISH SASTRI)

>

> e/ Other Quotations

>

> (i) In the Vedas and Puranas there is mention of a 360 day year the

> following quotes speak of this:

> " The wheel (of time) having twelve spokes revolve round the heavens,

> but it does not wear out. Oh Agni! 720 pairs of sons ride this

> wheel. " Rg Veda Samhita 1.164.22 (BJS vol. 1, pp. 17-18.) " Twelve

> spoke boards, one wheel, three navels. Who understands these? In

> these are 360 Shankus (rods) put in like pegs which do not get

> loosened. " Rg Veda Samhita 1.164.48 (BJS vol. 1, p. 18.) " A year has

> 360 days, a year has 720 days and nights together. " Aitareya Brahmana

> 7.17 (BJS vol. 1, p. 20.)

> The 360 day year doesn't refer to the length of a solar year (365.25

> days) or lunar year (360 tithis, about 354.36 solar days). The year

> of 360 days is called a Savana year and used strictly for sacrificial

> purposes particularly for the Soma-yajna as explained in the

> following quote from Dikshit's Bharatiya Jyotisha Sastra (BJS).

>

> Source: Bharatiya Jyotish Sastra (BJS-History of Indian Astronomy)

> published by the Government of India ---(JYOTISH SASTRI's article)

>

> (ii) The problem arises because of not understanding the intricacies

> of the luni-solar calendar and making the very serious blunder of

> equating tithi with day. A tithi is not equal to a solar day, and

> varies in length from about 19 to 26 hours depending on the velocity

> of the Moon. So taking this misconception a step further, people who

> were not steeped in Vedic calendric tradition began thinking that

> since old text books and manuals used by traditional Panditas talked

> of years with 12 months of 30 tithis and a year of 360 tithis this

> must be the same as years with 12 months of 30 days and 360 day

> years. This, then, is how we have become entangled in a useless

> controversy of whether the Mahadasa should be measured in 360 day

> years or 365 day years. This is like comparing apple with oranges,

> you cannot equate a tithi with a day. By doing so you get a situation

> in which the two systems diverge with time. ---(JYOTISH SASTRI's

> article)

>

>

> 3. (2) DEFINATION OF 365 D/Y

>

> a/ The other is the Solar Year. " Souraman " . The months are fixed on

> Basis of the Sun's entry into each Rashi. Thus months are named as

> MESHA, Vrishabha, etc. This year naturally has 365.2425 days.---

> (RAICHUR)

>

> b/ 365.25 days (interval of time taken by Sun to leave any one

> position in the Zodiac and again reach the same position)--- (KSK,

> Reader I, p 97);

>

> c/ to avoid complexity in calculation ---365 d/y not considered---

> 360 d/y accepted---if so particular— - 365 days not a year--- have to

> go for another 6h-9m-9.50 sec. ---( K.R. KAR, KP Anuual 2004, p 69)

>

> c/ to measure a year by 325.2 days (A solar year is the length of

> time from one vernal equinox to the next.)--- Confusion arose after

> the British introduced the Gregorian calendar into India, then Lunar

> tithis became mistakenly equated with Solar days and the Lunar year

> of 360 tithis became confused with a solar year of 360 days. Inspite

> of this confusion pre-British classics in Vedic astrology such as

> Phala Dipika clearly state that the year for Mahadasa calculation is

> 365 day year.---(JYOTISH SASTRI)

>

> d/ 365.25 days (the time taken by the Sun to complete one round of

> the Zodiac) ---(N. SANDARA RAJAN)

>

> e/ 365.2425 days (KPASTRO 2.0 and JAGNANNATHA HORA 7.02)

>

> f/ Other Quotations

>

> (i) Length of the year according to different Vedic astronomical

> texts (BJS vol. 2, p. 13)

>

> --------------------------- days------------ ghati---

> pala---- vipala- prativipala

> Vedanga Jyotisa------- 366

> Pitamaha Siddhanta--- 365----21------ 25

> Pulisa Siddhanta------ 365---- 15------ 30

> Surya Siddhanta------- 365---- 15------ 31------ 30

>

> Romaka Siddhanta---- 365---- 14----- 48

> 1st Arya Siddhanta--- 365---- 15------ 31------ 15

>

> Brahmagupta Siddhanta------- 365---- 15------ 30------

> 22------ 30

> 2nd Arya Siddhanta-- 365---- 15----- 31------ 17------

> 06

>

> [1 ghati = 24 minutes = 60 pala, 1 pala = 60 vipala, 1 vipala = 60

> prativipala]

>

> Source: Bharatiya Jyotish Sastra (BJS-History of Indian Astronomy)

> published by the Government of India (In Jyotish Satri's article)

>

>

> 4. SIGNIFICANCEOF 360 D/Y VERSUS 365 D/Y

>

> a/ The Savan yaer as such is not in use in any part of the world

> now. It is theGregorian Year of 365.2425 days that is universally

> used. The other is the PureLunar Year of about 340 days. The

> panchangs in India correct this and bring itin line with the solar

> year, by adding one ADHIKA MASA every 3 years or so.The followers of

> Islam, do not make any such adjustment. So their years arealways less

> than the Georgian, or Panchang Years.--- (RAICHUR)

>

> b/ If 360 D/y rather than 365 D/y is used for " MAHADASA "

> calculation, the gap between them would become more divergent with

> dasa period---6.25 days (365.25-360) after 1 year, 31.5 days (6.25x6)

> after 5 years,-----about 6 months after 35 years, a whole year after

> 70 years;--- (JYOTISH SASTRI)

>

> c/ Taking 365.25 D/Y to calculate 120 years of Vimshottari dasa, the

> total number of years will increase by 630 days (6.5x120)--- with

> compared to the maximumlongevity of 43200 days (360x120)----because

> each solar year (365.25 D/Y) exceeds the Vimshottari 360 D/Y by 5.25

> days.--- (N. SANDARA RAJAN)

>

> c/ In AM, Oct 1973, Hira Gulrajani advocated 360 D/Y ---saying

> there would be cumulative difference by as much as one month for

> every 6 years of age of the native between the indicated operative

> period under Vimsottari and that of what he terms as actual period.

>

=== message truncated ===

 

 

---------

A.R.Raichur bombay

anant_1608

raichuranant

USE ONE OF THESE ADDRESS ES ONLY

tel: 022-2506 2609

---------

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[Guest guest]

Dear Sri Anant Raichur,

 

After editing the summing up while waiting for some more names of 360

D/Y dasa using astrologers, it will be posted in the file section.

 

With highest regards,

 

Tin Win

 

 

 

 

, anant raichur <anant_1608>

wrote:

> Dear tw853

>

> Avery good summation. This should be loaded into the file sections

of the

>

> group.

>

> good luck

> --- tw853 <tw853> wrote:

>

> >

> >

> >

> > Dear Sri Anant Raichur,

> >

> > Sincerely thank you very much for your valuable remark to

> > close our second round discussion of 360 D/Y vs 365.25 D/Y as you

did

> > before to stop the first round dicussion in Msg #2076. With

your

> > outline let me present the summing up of the discussion for

> > information of the members.

> >

> >

> > With highest regards,

> >

> > Tin Win

> >

> >

> >

> >

> >

> > 360 D/Y vs 365.25 D/Y DISCUSSION

> >

> > 1. DEFINATION OF A DAY

> >

> > a/ the definition starts with the day. One sunrise to next

sunrise.--

> > - (RAICHUR, Msg #2978)

> >

> > b/ the interval of time between successessive occasion of sun

rise.---

> > (KSK, Reader I, p 97)

> >

> > c/ From a study of the Vedas and astronomical texts we find that

the

> > Sun is the basis for measuring time. That the year is based on

the

> > seasons which is again based on the movement of the Sun. ---

(365.25

> > D/Y advocate JYOTISH SASTRI, Astrlogical Magazine<AM>, October &

> > November 2000)

> >

> >

> > 2. NAMES OF A YEAR

> >

> > 2. (1) NAMES OF 360 D/Y

> >

> > a/ (i) SAVAN YEAR, (ii) CIVIL YEAR --- (RAICHUR, Msg #2978)

> >

> > b/ SAVANA MANAM --- (KSK, Reader I, p 97);

> >

> > c/ SAVANA YEAR ---(JYOTISH SASTRI, AM, Oct & Nov 2000)

> >

> > d/ neither a SOLAR nor a LUNAR nor a LUNI-SOLAR year--- (360 D/Y

> > advocate N. SUNDARA RAJAN, AM, Jan 2004, quoting B. V. Raman's

Graha

> > and Bhava Balas saying --- a year and month of 360 and 30 days

> > respectively)

> >

> > 2. (2) NAMES OF 365 D/Y

> >

> > a/ (i) SOLAR YEAR, (ii) SOURAMAN--- (RAICHUR)

> >

> > b/ SOURA MANAM--- ( KSK, Reader I, p 97-98)

> >

> > c/ ENGLISH CALENDAR YEAR ---(N. SUNDARA RAJAN)

> >

> > d/ SOLAR YEAR --- (JYOTISH SASTRI)

> >

> >

> >

> > 3. DEFINATION OF 360 & 365 D/Y

> >

> > 3. (1) DEFINATION OF 360 D/Y

> >

> > a/ 360 such days make up the " savan year " . This is called the

civil

> > year.--- (RAICHUR)

> >

> > b/ 360 days in Soura Manam ---(KSK, Reader I, p 97)

> >

> > c/ to measure a year by 360 days--- (JYOTISH SASTRI);

> >

> > d/ 360 days (360 tithis or 12 lunar month)--- (N. SANDRA RAJAN)

> >

> > e/ The unspoken assumption is that a 360 day year is

somehow " Lunar "

> > which is not 360 days long but rather 360 tithis (lunar days)

long,

> > which is about 354.36 solar days long.--- (JYOTISH SASTRI)

> >

> > e/ Other Quotations

> >

> > (i) In the Vedas and Puranas there is mention of a 360 day year

the

> > following quotes speak of this:

> > " The wheel (of time) having twelve spokes revolve round the

heavens,

> > but it does not wear out. Oh Agni! 720 pairs of sons ride this

> > wheel. " Rg Veda Samhita 1.164.22 (BJS vol. 1, pp. 17-18.) " Twelve

> > spoke boards, one wheel, three navels. Who understands these? In

> > these are 360 Shankus (rods) put in like pegs which do not get

> > loosened. " Rg Veda Samhita 1.164.48 (BJS vol. 1, p. 18.) " A year

has

> > 360 days, a year has 720 days and nights together. " Aitareya

Brahmana

> > 7.17 (BJS vol. 1, p. 20.)

> > The 360 day year doesn't refer to the length of a solar year

(365.25

> > days) or lunar year (360 tithis, about 354.36 solar days). The

year

> > of 360 days is called a Savana year and used strictly for

sacrificial

> > purposes particularly for the Soma-yajna as explained in the

> > following quote from Dikshit's Bharatiya Jyotisha Sastra (BJS).

> >

> > Source: Bharatiya Jyotish Sastra (BJS-History of Indian

Astronomy)

> > published by the Government of India ---(JYOTISH SASTRI's article)

> >

> > (ii) The problem arises because of not understanding the

intricacies

> > of the luni-solar calendar and making the very serious blunder of

> > equating tithi with day. A tithi is not equal to a solar day, and

> > varies in length from about 19 to 26 hours depending on the

velocity

> > of the Moon. So taking this misconception a step further, people

who

> > were not steeped in Vedic calendric tradition began thinking that

> > since old text books and manuals used by traditional Panditas

talked

> > of years with 12 months of 30 tithis and a year of 360 tithis

this

> > must be the same as years with 12 months of 30 days and 360 day

> > years. This, then, is how we have become entangled in a useless

> > controversy of whether the Mahadasa should be measured in 360 day

> > years or 365 day years. This is like comparing apple with

oranges,

> > you cannot equate a tithi with a day. By doing so you get a

situation

> > in which the two systems diverge with time. ---(JYOTISH SASTRI's

> > article)

> >

> >

> > 3. (2) DEFINATION OF 365 D/Y

> >

> > a/ The other is the Solar Year. " Souraman " . The months are fixed

on

> > Basis of the Sun's entry into each Rashi. Thus months are named

as

> > MESHA, Vrishabha, etc. This year naturally has 365.2425 days.---

> > (RAICHUR)

> >

> > b/ 365.25 days (interval of time taken by Sun to leave any one

> > position in the Zodiac and again reach the same position)---

(KSK,

> > Reader I, p 97);

> >

> > c/ to avoid complexity in calculation ---365 d/y not considered--

-

> > 360 d/y accepted---if so particular— - 365 days not a year---

have to

> > go for another 6h-9m-9.50 sec. ---( K.R. KAR, KP Anuual 2004, p

69)

> >

> > c/ to measure a year by 325.2 days (A solar year is the length of

> > time from one vernal equinox to the next.)--- Confusion arose

after

> > the British introduced the Gregorian calendar into India, then

Lunar

> > tithis became mistakenly equated with Solar days and the Lunar

year

> > of 360 tithis became confused with a solar year of 360 days.

Inspite

> > of this confusion pre-British classics in Vedic astrology such as

> > Phala Dipika clearly state that the year for Mahadasa calculation

is

> > 365 day year.---(JYOTISH SASTRI)

> >

> > d/ 365.25 days (the time taken by the Sun to complete one round

of

> > the Zodiac) ---(N. SANDARA RAJAN)

> >

> > e/ 365.2425 days (KPASTRO 2.0 and JAGNANNATHA HORA 7.02)

> >

> > f/ Other Quotations

> >

> > (i) Length of the year according to different Vedic astronomical

> > texts (BJS vol. 2, p. 13)

> >

> > --------------------------- days------------ ghati---

> > pala---- vipala- prativipala

> > Vedanga Jyotisa------- 366

> > Pitamaha Siddhanta--- 365----21------ 25

> > Pulisa Siddhanta------ 365---- 15------ 30

 

> > Surya Siddhanta------- 365---- 15------ 31------

30

> >

> > Romaka Siddhanta---- 365---- 14----- 48

> > 1st Arya Siddhanta--- 365---- 15------ 31------

15

> >

> > Brahmagupta Siddhanta------- 365---- 15------ 30----

--

> > 22------ 30

> > 2nd Arya Siddhanta-- 365---- 15----- 31------ 17----

--

> > 06

> >

> > [1 ghati = 24 minutes = 60 pala, 1 pala = 60 vipala, 1 vipala =

60

> > prativipala]

> >

> > Source: Bharatiya Jyotish Sastra (BJS-History of Indian

Astronomy)

> > published by the Government of India (In Jyotish Satri's article)

> >

> >

> > 4. SIGNIFICANCEOF 360 D/Y VERSUS 365 D/Y

> >

> > a/ The Savan yaer as such is not in use in any part of the

world

> > now. It is theGregorian Year of 365.2425 days that is universally

> > used. The other is the PureLunar Year of about 340 days. The

> > panchangs in India correct this and bring itin line with the

solar

> > year, by adding one ADHIKA MASA every 3 years or so.The followers

of

> > Islam, do not make any such adjustment. So their years arealways

less

> > than the Georgian, or Panchang Years.--- (RAICHUR)

> >

> > b/ If 360 D/y rather than 365 D/y is used for " MAHADASA "

> > calculation, the gap between them would become more divergent

with

> > dasa period---6.25 days (365.25-360) after 1 year, 31.5 days

(6.25x6)

> > after 5 years,-----about 6 months after 35 years, a whole year

after

> > 70 years;--- (JYOTISH SASTRI)

> >

> > c/ Taking 365.25 D/Y to calculate 120 years of Vimshottari dasa,

the

> > total number of years will increase by 630 days (6.5x120)--- with

> > compared to the maximumlongevity of 43200 days (360x120)----

because

> > each solar year (365.25 D/Y) exceeds the Vimshottari 360 D/Y by

5.25

> > days.--- (N. SANDARA RAJAN)

> >

> > c/ In AM, Oct 1973, Hira Gulrajani advocated 360 D/Y ---saying

> > there would be cumulative difference by as much as one month for

> > every 6 years of age of the native between the indicated

operative

> > period under Vimsottari and that of what he terms as actual

period.

> >

> === message truncated ===

>

>

> ---------

> A.R.Raichur bombay

> anant_1608

> raichuranant

> USE ONE OF THESE ADDRESS ES ONLY

> tel: 022-2506 2609

> ---------

>

>

>

>

 

>

>

>