For the Students of Hindu Vedic Astrology by Dr. Shanker Adawal

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Accuracy and Precision with Golden Rule while study the Horoscope!



A word here will not be out of place regarding the expressions accuracy and precision. Unless the birth-time is known to within less than one minute, it is impossible to calculate the figure correctly to within less than about 15’ on the cusps of the houses; and to calculate a figure correctly to 5” one would need to have the time known, exactly, to within less than one-third of a second.

Therefore, while it is quite possible to calculate a figure with great precision for any instant of time, unless that instant is known to be the correct birth-time, the labour spent in obtaining such precision is – except as mental training – merely thrown away.

It should be clearly realised that because a figure is only computed to the nearest degree, it is not on that account less accurate (provided no actual mistakes have been made) than one calculated to and – it is very less precise. And in any case astrological judgments are seldom or never based on any fraction of the zodiac less than the degree. But it is important that the student should have a clear conception of the ‘limits of precision’ that he is dealing with – let him understand and know with certainty whether his figure is correct to within a degree, to within half a degree, or to within a degree and a half.

For confusion and dissatisfaction are far more likely to arise from indefiniteness and vagueness of thought in this respect, than from want of precision in working, or through absence of all the needed “corrections,” etc., in the calculations.

There are many who desire to set up a map for an approximate time, correct say within a quarter of an hour, which have neither time nor aptitude for the rather tiresome minutiae sometimes introduced. And it is for these that the present section is mainly intended.

Probably we must find that two or three examples will be more instructive than a series of rules, and therefore, after enunciating the “golden rule,” we shall at once proceed to calculate sundry horoscopes by way of showing the way of going to work.

Golden Rule – This rule admits of no exception
  1. Convert the given Standard Time into ‘Local Mean Time’.
  2. The houses of the horoscope are to be calculated for Local Mean Time, the equivalent Sidereal Time being found.
  3. The Planetary Positions are to be calculated for Greenwich Mean Time, abbreviated G.M.T.



The Sidereal Time at Noon at any place is approximately as follows on the given dates, whatever the year:-

  • March 22 - oh. om.
  • April 22 -  2h. om.
  • May 22 - 4h. om.
  • June 21 - 6h. om.
  • July 22 - 8h.om.
  • August 22 - 10h. om.
  • September 21 - 12h. om.
  • October 21 - 14h. om.
  • November 21 - 16h. om.
  • December 21 - 18h. om.
  • January 21 - 20h. om.
  • February 20 -  22h. om.

Note: The “Sidereal time at Noon” increases about 4 minutes per day. The S.T. on any given day varies slightly from year to year, and therefore where precision is required the table given at end of book must be consulted.

Dr. Shanker Adawal
www.ShankerAdawal.com
www.ShankerStudy.com
www.youtube.com/user/shankeradawal

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