Ease of Planetary Calculation

From those parts, the lightness likely referring to a smaller fractional value is brought into the queen's portion; the degrees = 2. He explains the knowledge of altitude degrees from the elapsed time = 1. Then, by the method stated, "it should be subtracted from the half-day" = 2.

Divided, then multiplied by the maximum; the root is the day-half rotation. Divided by the moon 19, the result is the time from noon ghati: a unit of time equal to 24 minutes minus the "three-fires" 30 and the "parts" 22.
Multiply by 90 and the elapsed time, the result is the degrees of the sky. Then the degrees of declination are multiplied by the maximum 24, as told by the ancients 23.

He explains the time from noon based on the degrees of altitude.
The sine-degrees bhujāṃśāḥ are not there; thus the altitude from the instrument is 23. The desired instrument degrees are multiplied by the declination 24.
Divided by the maximum, the result is the sine-degrees of the time from noon. Multiplied by the day-half and divided by 90. In the [celestial] bowl, the hours are respectively East and West. These are 24.

He explains the knowledge of altitude degrees from the desired hypotenuse = 5.

He explains the desired hypotenuse from the degrees of altitude.
The instrument degrees and the declination degrees are 288. These are the "two-ear" hypotenuse. The hypotenuse multiplied by those 288 becomes the declination 25.
Or those are the instrument degrees 25. Now, he explains the means of calculation: on the circle, when the parts are equal, from the gnomon shanku: a vertical pillar used to cast shadows standing at the center, gradually middle of the circle middle of the circle.

And thus, describing the essence of the mark, the circle should be made from the Western mark to the Eastern mark. When this is done, a fish-shape is formed; the cord passing through the mouth and tail of the fish becomes the North-South line. This is the meaning = 7. In the Eastern bowl, the twenty-fold... text obscured? ...should be subtracted = 6.

Below twenty, the tip of the shadow is here, West and East. From those two, the direction is established as one, namely South 26. From the degrees of the sun's declination 26.
Multiplied by the hypotenuse, the shadow-hypotenuse is multiplied by the "end-of-sky-fires" 250. The "arm" sine is in the direction of the quarters. In the direction of Yama South 2, it is refined by the shadow at the center.

The "equal-arm" is always in the direction of Yama, which is the South direction. It is refined by the equinoctial shadow pallabhā: the shadow cast by a gnomon at noon on the equinox. If the directions are the same, they are added; if different, the difference is the clear [corrected] value = 3.

From the sine, the "fish-cord" should be given from the tip of the gnomon. The cord meeting the center of the "equal-arm" from the South is the East-West line 28.
The difference between the day-length and "sky-qualities" 30 is "Shiva-qualities" 11. If the day is greater than thirty 30, the shadow is North. The instrument degrees and declination: eight 15 15 South 29.

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The meaning of "at the center" is this: At the center on level ground, a circle is made with a cord measured by the desired shadow. At that center point, the product of the shadow, the East, and the declination degrees should be made. That again meets the desired shadow on the instrument; a mark should be made there. From that, with the two "arms," in the South or North, the "arm" is measured by the "qualities" 11, multiplied by the hypotenuse, and divided by thirty-and-a-half. The "arm" in digits angulas etc., should be given like the sine of the difference. When this is done, the "arm" that is formed reveals the Sun's South or North position. Thus, the "arm" and its knowledge should be understood from the solar sphere = 7.

The cord placed as far as the center shall be the East-West line.