Neelakantha's Persian Astrology

The number of elapsed years the count of years passed since birth is multiplied by eleven original: "Shivaghna," where Shiva represents the number 11. To this, add its own portion divided by one hundred and seventy original: "svakhāṃṣṭrīṃdulavāḍhyaḥ," a numerical code for 170. This result should then be added to the birth lunar day the specific day of the lunar month when the person was born, counting from the first day of the bright fortnight of the month of Magha. The total is then divided by thirty original: "khāgni," where 'kha' is 0 and 'agni' is 3, representing 30. In that resulting lunar day, the Year-Entry Varshapravesha: the exact moment the sun returns to its natal position occurs. However, there is no absolute rule that it must fall on that exact lunar day; it may sometimes occur on the preceding or following day. Here, the weekday is the true authority. Among the three possible lunar days, the one on which the previously calculated weekday falls is to be known as the true day of Year-Entry. This is how the year is arrived at; the remainder should be understood as the calculation of the planets. Now, the sequence of examples is written. First, a birth record is provided.

Now he describes the means of determining the lunar day: The years multiplied by eleven, increased by its 170th part, divided by thirty, and added to the birth lunar day, results in—

The example is written: In the Year Samvat 1648, Shaka era 1513, on the first day of the bright fortnight of the month of Magha, a Wednesday. The time was 36 Ghatis: a unit of 24 minutes, under the Shravana constellation, 54 Ghatis, and the Vajra Yoga, 1 Ghati. On this auspicious day, at 27 Ghatis and 53 Palas: a unit of 24 seconds from sunrise, and 12 Ghatis and 31 Palas into the night, the birth occurred. The shadow of the gnomon used for latitude was 7.30. The longitudinal correction Deshantara was 30. The Sun's position was 9 signs, 7 degrees, 30 minutes, and 6 seconds. The rising sign at birth Lagna was 5 signs, 15 degrees, 35 minutes, and 50 seconds. Now, the example for the Year-Entry: The Shaka year at birth, 1513, is subtracted from the current Shaka year, 1550. The remainder is 37, which is the number of elapsed years. This, increased by its fourth part (18.50) likely referring to leap year adjustments or specific cycle fractions, becomes 46.15.50. The elapsed years (37) multiplied by twenty-one equals 777. This is divided by forty, yielding 19 Ghatis, 25 Palas, and 30 seconds. This, added to the previous sum of 46.15.50, results in 46.34.25.30. This is then added to the birth weekday and time (4.30.53), resulting in the following figure: