Ayanamsa

A wonderful, simple word, is enough to bring everyone into the boxing ring. Today, there are around 40+ ayanamsa recommendations available. The list will grow even bigger in the coming years. Anyone who starts thinking that the available ayanamsas in the list do not solve the problem at hand, ends in finding a new ayanamsa. Everyone has strong defense to justify their method.

The reality is, every ayanamsa in the list can be proved correct and at the same time all of them can also be proved incorrect. Because, astrology is a pseudoscience. Use the one that you feel more comfortable is the best solution.

What is Ayanamsa?

If you would like to know what is Ayanamsa technically, it requires understanding of astronomy. You can get educated on that subject easily by either reading the eBook from the Resources section written by Mr.V.Subramanian or searching in google. In layman terms, it can be described as follows.

Astronomy gives the position value of a planet. An additional value has to be subtracted from the actual position value to find out the exact star behind the planet. This additional value is called ayanamsa. It changes every year. Thats enough for now.

Lahiri / Chitrapaksha Ayanamsa

Goverment of India formed the Calendar Reform Committee in 1955 under the leadership of Nirmala Chandra Lahiri, an astronomer & scientist to arrive at figures that can be used by the entire nation. The mission of this project was to enforce one common ayanamsa, so all religious festivals fell on the same day. Mr.Lahiri tried his best to find the balance and arrived at a formula.

He positioned the Star Spica (Chitra) at 0 degrees in Libra and built his theory upon it. Astronomically his placement is not 100% accurate as there is a small correction but only in arc seconds level and negligible astrologically. Till now, Critics fire bullets on his calculations.

Surprisingly, whether Lahiri Ayanamsa is accurate or approximate, it serves not only its purpose, but also remains the safe choice for majority of the astrologers in East and West. May be its strength itself is its approximation.

KP Ayanamsa

The founder of the KP System, Mr.Krishnamurti, detailed about the ayanamsa used by him in his book KP Reader-01 on Pages between 55 and 58. From those pages, we understand the following.

  • The year of coincidence of both zodiacs was 291 AD.
  • The rate at which the point of intersection of the Ecliptic and the Celestial equator moves in retrograde motion is 50.2388475 seconds as given by NEWCOMB.
  • If the astrologer wants an ayanamsa from the years beyond 2001, for each year add at the rate of 50.2388475 seconds.

So, it is evident that, despite the availability of several precession rates at his time, Mr. KSK wanted to adapt the rate of precession recommended by the modern astronomy. His recommendation of adding 50.2388475 seconds each year for future ayanamsas should be seen only as "use the latest precession rate as advocated by the astronomy".

Next parameter to be justified is the Year 291 AD. Like the precession rates, there are many theories available and each one has its own year of coincidence. As Mr. Krishnamurti had not presented any sources to prove his choice, the logical conclusion may be, the stellar research of Mr. K.S.K brought him much success with the ayanamsa values he arrived at during his time and going backwards using the NewComb Rate of Precession value, probably ended him in Year 291 AD. Other than that, we do not have any solid source to support this theory. As the situation demands to use a Zero Year for ayanamsa, we take 291 AD as the year of coincidence (not necessarily THE year of coincidence!), because it is universally accepted by KP astrologers.

At this point, it became clear that the founder's recommendation included a reference to a scientific precession value for calculating the Ayanamsa used by him. He prepared the list of ayanamsa values for every year from 1840 AD to 2001 AD and requested the followers to calculate the values for future years with the help of the changes in the astronomy accordingly. After his time, few enthusiastic KP astrologers tried to achieve this but ended up in multiple ayanamsa methods / formule within KP System itself.

For achiving a solution to this problem, one must acquire strong knowledge on the following:

  • Theory behind the KP Ayanamsa
  • Zero Ayanams Year 291
  • Newcomb Precession Model
  • Comparison of KP Ayanamsa with N.C.Lahiri, C.G.Rajan and others
  • IAU 2006 Precession Model
  • Process of adapting Modern Astronomy recommendations as advised by the founder.

Mr.D.Senthilathiban had done an exceptional research, addressed all the above topics in his work which is available in the form of an eBook called Study of KP Ayanamsa with Modern Precession Theories. In this work, he carefully analyzed every section in detail and arrived at a formula in compliance with KP System and the IAU-2006 Precession Model, the most recent update, recommended by the International Astronomical Union (IAU). According to him, the coincidence of both zodiacs must have occurred on 21-MAR-291 04:09:00 Universal Time, the time when the tropical Sun is located at zero degrees of Aries.

The same work has been simplified by Mr.V.Subramanian, an eminent KP astrologer from Chennai, India, in Tamil Language, and it is also available in the form of an eBook called KP Ayanamsa, an Analysis.

Both eBooks are available for free download in Resources section.

Other Ayanamsas

There are many other ayanamsas available (around 42) incluing B.V.Raman, Suryasiddhanta, Fagan/Bradley, ChandraHari and PVR.Narashima Rao. People would try many more in future also. Every attempt presents not only an opportunity to benchmark the existing theories but also to rule out theories that do not make sense.

KP Ayanamsa using IAU-2006 Model (Terms & Conditions)

The astronomical institutions across the globe watch the sky all the time and make changes to the constants every now and then. For the rate of precession value, it was slightly adjusted by IAU (International Astronomical Union) couple of times in the 20th century and then again in 2006.

Based on the new process, ayanamsa value for every day @ 00:00 Universal Time are calculated between 1900 AD and 2099 AD & available as pdf documents in the Resources section.

There are commercial softwares available all over, but it is unlikely that they consider this change anytime soon and implement in their products. So, we decided to provide enough resources to all KP Astrologers to try the new recommendations. All the materials are available Resources Section. These materials are provided for educational purpose only. Please read our Terms & Conditions page before using them.