True Ayanmsha Calculation for any Day

Thanks A lot Shri Sreenadh OG for your valuable information.Post this clarification, the next obvious question which comes to my mind for what ephemeris table to use with true ayanamsha. And to my limited knowledge, I suppose we would have to calculate that for true ayanamsha, because others won't be applicable to this.

Could you shed some light how you calculate planet positions using true ayanamsha and w/o using ephemeris based on other ayanamshas?Thanks & Regards,Prabhat Kumar SinghKolkata.phone  +91-9681857057

On Sat, Feb 13, 2010 at 11:48 AM, Sreenadh OG <sreesog wrote:

Dear Prashant ji, //Could you please explain briefly how to calculate Ayanamsha for any

given day(other than beginning of year) using this formulation?//  I am attaching a worksheet, that will help you to calculate True Ayanamsa for any year. For further info-1) If you want to discuss this or similar subjects visit: /

2) If you are in search of further  similar reading material visit: http://www.nastrology.com//Also their is no consideration for leap years . Won't this affect the accuracy of results?//

No. Because when we use Yuga numbers and system for calculation, that inherently means that we are depending on average speed, base year, degrees etc for calculation and this free us from considering leap years etc. Experiment with the formula and results it produce (you can compare with Lahari or Chitrapaksha Ayanamsa) to verify

the accuracy of the formula.  Please note that -* 8586  is a Yuga number (connected with average speed of planets as well)* 71.55 could be the human heart beat. (Bio rhythm which correlates with circadian rhythm)

Some of the files present in the following locations may provide further info -1) Sreenadh%20OG/

2) Chandra%20Hari/Love and regards,Sreenadh

--- On Thu, 2/11/10, prabhat <prabhatkr wrote:

prabhat <prabhatkrTrue Ayanmsha Calculation for any Daysreesog

Thursday, February 11, 2010, 11:20 AMHi,I came through your post for true ayanamsha calculation method.http://sites.google.com/site/sreelid/trueayanamsa

Could you please explain briefly how to calculate Ayanamsha for any given day(other than beginning of year) using this formulation?

[ AY = (Y-238)120'/8586 ]Also their is no consideration for leap years . Won't this affect the accuracy of results?Thanks,Prabhat Kumar SinghKolkata.phone  +91-9681857057

Dear Prabhat ji,//the next obvious question which comes to my mind for what ephemeris table to use with true ayanamsha. And to my limited knowledge, I suppose

we would have to calculate that for true ayanamsha, because others won't be applicable to this.// You are absolutely right. But the answer for the same as of now is - * There is no ephemeris currently available that provides all planetary longitudes based on True Ayanamsa (i.e. Surya Siddhantic Ayanamsa as clarified by Chandra Hari) But many work arounds are possible, such as - 1) Use any Lahari/Chitrapaksha based ephemeris and SUBTRACT 44 min from the availed planetary

longitudes (Or use ADD 44 min to the Lahari Ayanamsa during calculations) 2) Use a program like JHora and set the Ayanamsa to be used as Chandahari Ayanamsa; OR Use Lahari ayanamsa and set the program to add 44 min to Lahari ayanamsa (so that we get a value closer to True Ayanamsa; this is perfectly possible with JHora). In JHora if we set Ayanamsa as Chandrahari Ayanamsa OR if we set ayanamsa as Lahari+44 then what we get is planetary longitudes as per True Ayanamsa (or at least values very near to it, we can say). 3) Use any ephemeris that provides planetary longitudes based on no ayanamsa (Tropical Chart/Western style) and then ADD the True Ayanamsa to the availed planetary

longitudes so as to get the True Ayanamsa based planetary position. Try any work around choice that you find easy, comfortable and simple to use for you.//Could you shed some light how you calculate planet positions using true ayanamsha and w/o using ephemeris based on other ayanamshas?//Hope I have answered this question above.Love and regards,Sreenadh--- On Mon, 2/15/10, prabhat <prabhatkr wrote:prabhat <prabhatkrRe: True Ayanmsha Calculation for any Day"Sreenadh OG" <sreesogCc: Date: Monday, February 15, 2010, 1:46 PMThanks A lot Shri Sreenadh

OG for your valuable information.Post this clarification, the next obvious question which comes to my mind for what ephemeris table to use with true ayanamsha. And to my limited knowledge, I suppose we would have to calculate that for true ayanamsha, because others won't be applicable to this.

Could you shed some light how you calculate planet positions using true ayanamsha and w/o using ephemeris based on other ayanamshas?Thanks & Regards,Prabhat Kumar SinghKolkata.phone +91-9681857057

On Sat, Feb 13, 2010 at 11:48 AM, Sreenadh OG <sreesog wrote:

Dear Prashant ji, //Could you please explain briefly how to calculate Ayanamsha for any

given day(other than beginning of year) using this formulation?// I am attaching a worksheet, that will help you to calculate True Ayanamsa for any year. For further info-1) If you want to discuss this or similar subjects visit: /

2) If you are in search of further similar reading material visit: http://www.nastrology.com//Also their is no consideration for leap years . Won't this affect the accuracy of results?//

No. Because when we use Yuga numbers and system for calculation, that inherently means that we are depending on average speed, base year, degrees etc for calculation and this free us from considering leap years etc. Experiment with the formula and results it produce (you can compare with Lahari or Chitrapaksha Ayanamsa) to verify

the accuracy of the formula. Please note that -* 8586 is a Yuga number (connected with average speed of planets as well)* 71.55 could be the human heart beat. (Bio rhythm which correlates with circadian rhythm)

Some of the files present in the following locations may provide further info -1) Sreenadh%20OG/

2) Chandra%20Hari/Love and regards,Sreenadh

--- On Thu, 2/11/10, prabhat <prabhatkr wrote:

prabhat <prabhatkrTrue Ayanmsha Calculation for any Daysreesog

Thursday, February 11, 2010, 11:20 AMHi,I came through your post for true ayanamsha calculation method.http://sites.google.com/site/sreelid/trueayanamsa

Could you please explain briefly how to calculate Ayanamsha for any given day(other than beginning of year) using this formulation?

[ AY = (Y-238)120'/8586 ]Also their is no consideration for leap years . Won't this affect the accuracy of results?Thanks,Prabhat Kumar SinghKolkata.phone +91-9681857057

Hi,Dear Sreenadh Ji, many thanks for your clear explanations.I would prefer option 3 for the same, because, i think, this would be most accurate than other 2 methods. CORRECT?I am basically duing a  project in computer modeling, and vedic astrology is fantastic.

I would love to know any method if I could generate ephemeris table using some sort of programming(javascript, C++ or matlab). This would free me from relying on pre-generated tables for finding Zodiac positions of planets.

Any one in this group, if knows about any such resource, please provide a direction. I did my research and found following 2 JS calculators. They are amazing! though not based on " True ayanamsha " .

Many many thanks!Prabhat Kumar SinghKolkata.

2 of 2 File(s)

bhavcalc.htm

Document.Html

Dear Prabhat ji, You are right.//

I would love to know any method if I could generate ephemeris table using some sort of programming// If you are looking for the most accurate values then better to depend on Swiss ephemeris for tropical planetary longitudes. You can visit http://www.astro.com/swisseph/swephinfo_e.htm?lang=e The provide API and tools to calculate ACCURATE Tropical planetary longitudes. You can write your own program to use this API/library and (thus save yourself from extensive programming) then add the True Ayanamsa value to it to get the Sidereal (Nirayana) planetary position based on Surya Siddhantic True Ayanamsa. Instead if you depend on Javascript of C++ programs to derive planetary longitudes then, things might be simple and self dependent but the derived longitudes may not be

accurate enough. By the way, JHora uses this Swiss emphemeris itself. But since you are a programmer better to download the dlls etc provided by astro.com, license it (GPL or Swiss Ephemeris professional license) and start programming utilizing the same within your program. The link to the download area of astro.com is: ftp://ftp.astro.com/pub/swisseph/Love and regards,Sreenadh--- On Thu, 2/18/10, prabhat <prabhatkr wrote:prabhat <prabhatkrRe: True Ayanmsha Calculation for any Day"Sreenadh OG"

<sreesogCc: Date: Thursday, February 18, 2010, 12:02 AMHi,Dear Sreenadh Ji, many thanks for your clear explanations.I would prefer option 3 for the same, because, i think, this would be most accurate than other 2 methods. CORRECT?I am basically duing a project in computer modeling, and vedic astrology is fantastic.

I would love to know any method if I could generate ephemeris table using some sort of programming(javascript, C++ or matlab). This would free me from relying on pre-generated tables for finding Zodiac positions of planets.

Any one in this group, if knows about any such resource, please provide a direction. I did my research and found following 2 JS calculators. They are amazing! though not based on " True ayanamsha".

Many many thanks!Prabhat Kumar SinghKolkata.

On Mon, Feb 15, 2010 at 3:14 PM, Sreenadh OG <sreesog wrote:

Dear Prabhat ji,

//the next obvious question which comes to my mind for what ephemeris table to use with true ayanamsha. And to my limited knowledge, I suppose

we would have to calculate that for true ayanamsha, because others won't be applicable to this.// You are absolutely right. But the answer for the same as of now is -

* There is no ephemeris currently available that provides all planetary longitudes based on True Ayanamsa (i.e. Surya Siddhantic Ayanamsa as clarified by Chandra Hari)

But many work arounds are possible, such as - 1) Use any Lahari/Chitrapaksha based ephemeris and SUBTRACT 44 min from the availed planetary

longitudes (Or use ADD 44 min to the Lahari Ayanamsa during calculations) 2) Use a program like JHora and set the Ayanamsa to be used as Chandahari Ayanamsa; OR Use Lahari ayanamsa and set the program to add 44 min to Lahari ayanamsa (so that we get a value closer to True Ayanamsa; this is perfectly possible with JHora). In JHora if we set Ayanamsa as Chandrahari Ayanamsa OR if we set ayanamsa as Lahari+44 then what we get is planetary longitudes as per True Ayanamsa (or at least values very near to it, we can say).

3) Use any ephemeris that provides planetary longitudes based on no ayanamsa (Tropical Chart/Western style) and then ADD the True Ayanamsa to the availed planetary

longitudes so as to get the True Ayanamsa based planetary position. Try any work around choice that you find easy, comfortable and simple to use for you.

//Could you shed some light how you calculate planet positions using true ayanamsha and w/o using ephemeris based on other ayanamshas?//Hope I have answered this question above.

Love and regards,Sreenadh--- On Mon, 2/15/10, prabhat <prabhatkr wrote:

prabhat <prabhatkr

Re: True Ayanmsha Calculation for any Day"Sreenadh OG" <sreesogCc:

Monday, February 15, 2010, 1:46 PMThanks A lot Shri Sreenadh

OG for your valuable information.Post this clarification, the next obvious question which comes to my mind for what ephemeris table to use with true ayanamsha. And to my limited knowledge, I suppose we would have to calculate that for true ayanamsha, because others won't be applicable to this.

Could you shed some light how you calculate planet positions using true ayanamsha and w/o using ephemeris based on other ayanamshas?Thanks & Regards,Prabhat Kumar SinghKolkata.

On Sat, Feb 13, 2010 at 11:48 AM, Sreenadh OG <sreesog wrote:

Dear Prashant ji, //Could you please explain briefly how to calculate Ayanamsha for any

given day(other than beginning of year) using this formulation?// I am attaching a worksheet, that will help you to calculate True Ayanamsa for any year. For further info-1) If you want to discuss this or similar subjects visit: /

2) If you are in search of further similar reading material visit: http://www.nastrology.com//Also their is no consideration for leap years . Won't this affect the accuracy of results?//

No. Because when we use Yuga numbers and system for calculation, that inherently means that we are depending on average speed, base year, degrees etc for calculation and this free us from considering leap years etc. Experiment with the formula and results it produce (you can compare with Lahari or Chitrapaksha Ayanamsa) to verify

the accuracy of the formula. Please note that -* 8586 is a Yuga number (connected with average speed of planets as well)* 71.55 could be the human heart beat. (Bio rhythm which correlates with circadian rhythm)

Some of the files present in the following locations may provide further info -1) Sreenadh%20OG/

2) Chandra%20Hari/Love and regards,

Sreenadh

--- On Thu, 2/11/10, prabhat <prabhatkr wrote:

prabhat <prabhatkrTrue Ayanmsha Calculation for any Daysreesog

Thursday, February 11, 2010, 11:20 AMHi,I came through your post for true ayanamsha calculation method.http://sites.google.com/site/sreelid/trueayanamsa

Could you please explain briefly how to calculate Ayanamsha for any given day(other than beginning of year) using this formulation?

[ AY = (Y-238)120'/8586 ]Also their is no consideration for leap years . Won't this affect the accuracy of results?Thanks,Prabhat Kumar SinghKolkata.