SANKETANIDHI (The Treasure of Learning) SANKETA ONE 1. It is prayed that the exalted union of Sri (Lakshmi) and Sripati (ViùÍu) which is brightened by love for the purpose of great prosperity of the universe may bestow unlimited good the people who are attached to the ancient tradition. 2. Shri Rama Dayalu has written this work for the benefit of his brothers son and to enable him to learn and be proficient in the various facets of astrology, namely Prasna, Jama, Varshaphal, Adhana, and for good of the world. The treatise is based on principles and ideas propounded by the learned men in the past. 3. One who knows astrology should carefully work out his calculations according to the principles laid down by Aryabhatt to arrive at the exact number of ghatikas elapsed since last sunrise at any given time, the total period of any required day should be substracted from the maximum length of the day in the year. The figure so arrived at be multiplied by 7 and the product divided by 5. the quotient will be the length of the shadow (cast by a 12 inch stick) at mid day of the locality. 4. On the given day the length of the shadow indicated by the 12 inches stick is known as Ishtema. Ten may be added to it and then from the figure so arrived at, we may subtract the total length of the shadow at noon on the day. The remainder will be the divisor required. The figure to be divided by this divisor will be arrived at by multiplying the length of the required day by 5. After such a division the quotient will represent the number of Ghaties that have elapsed since last sunrise or to elapse for the next sun set. 5. Take the difference between the maximum duration of the day for the locality and the length of the day in question and subtract from this 1/16th part. 1/8th of the figure arrived at may then be subtracted from 1. To the result may be added 1/12th of the length of the shadow at the given time. This will be the divisor. Then we may divide half the length of particular day by this divisor. The quotient will indicate the number of ghaties that have elapsed since last sun-rise or to elapse till the next sunset as the case may be. 6.The time between one sunrise and the next sunrise (which is supposed to be near about 60 ghaties) consists of 21,600 breaths or pranas. One ghati is made of 360 breaths. The time taken to pronounce ten long syllables is one prana, and six pranas make one vinadee or vighati. Sixty vighaties or palas make one ghati 7. To enable us to know the exact number of ghaties etc., that have elapsed at any required time at night, the following method should be followed: 1) Count the star that is seventh from the star occupied by Sun; 2) Count the star that is rising in the East, and 3) Count the star that is exactly over your head. Then subtract 1 from (1), 15 from (2) and 8 from (3). Then we may multiply the three figures arrived at in the manner indicated above, separately by the number of ghaties representing one half of the duration of the given night and divide the results by 7. The number so becoming available in each case will be the same in each case and will be the ghaties etc. required. 8. There is another method of ascertaining the same information as mentioned in the previous sloka. From the longitude (Rasi, degrees, minutes etc.) of the star just over your head, subtract the longitude of the Sun. The result should be converted into degrees. If that
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