Khandakhadyaka: A Manual

Khandakhadyaka: A Manual, 12

Subtract the drg-guna visibility correction/correction for longitude from that the result. This means from the ahargana day-count. The result is in bhagana revolutions, etc., which means it begins with revolutions, and from there, cycles. By what amount? By shara-nava-rasaih 5, 9, and 6, meaning 695. That is the divisor. By 1579 the number 1579, which is 6, 9, and 5 the number 569, though the text lists digits that form 1579. With these sa-ansha with parts/degrees, it should be added. The result obtained by dividing the day-count by 1579, in degrees, etc., should be added to the previously obtained result in signs, etc. "The pata node is subtracted from the circle" means it is subtracted from ten signs 300 degrees. When done in this way, the pata is obtained.

Manual: The desired day-count should be reduced by the drg-guna. This means by a large reduction of 300 actually 132 as implied. 132. Then divide the remainder by 695 referencing 1579 in the note. The obtained result is in revolutions, etc. The result is calculated like that of the Sun. Then, again, divide the day-count by 514556 the number 56514. Add the obtained result in degrees, etc., to the previously obtained result in signs, etc., and subtract this from ten signs to get the Moon's node. From that, subtract the dashakam ten of minutes. As it is said: "The Moon's apogee and the Moon's node are [to be reduced] by ten minutes of arc." From that, subtract 26 minutes of arc. This is the tradition. When done in this way, the pata of the Moon is obtained and is suitable for work.

Example: For instance, the day-count is 72715. Subtracting this drg-guna of 132, the remainder is 72583. Dividing this by 1579, the remainder of the revolution is 4383. Multiplying this by 12 and dividing by the divisor, the result in signs, etc., like the Sun's, is 0;22;44;30. Again, dividing the day-count 72715 by 514556, the result in degrees, etc., obtained is 0;8;28. Adding this to the previously obtained 0;22;44;30, we get 0;22;52;58. Subtracting this from the circle of signs (12;0;0), the remainder is 4;7;7;2. Subtracting 10 minutes and 26 minutes of arc from this, the midnight Moon node is 4;7;30;2. This is always suitable for work.

Thus, the Sun, Moon, and Moon's node are obtained for midnight. If the calculation is done for a different time, they become contemporaneous.