Chapter on Mean Positions

original: "Madhya Adhyaya"

Explanation: Place the total elapsed days Dyugana the number of days passed since the start of the epoch in two separate positions. Divide the first position by 6 to get the degrees, and divide the second position by 60 to get the minutes of arc. Add these two results together to find the movement of the Moon's apogee Chandrocca the point where the Moon is farthest from Earth. To this, add the epoch constant Dhruva the fixed starting position for this era of 2-17-27-12. Finally, divide the elapsed years of the era Trigunabda by 983 and subtract the resulting seconds of arc from your total.

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For Rahu

Rahu represents the North Node of the Moon, where its orbit crosses the ecliptic. In Indian astronomy, it is calculated as moving backward (retrograde).

Verse: Multiply the total elapsed days by three and place it in two positions. Divide the second by one thousand and four (1004). This provides the degrees and minutes for the shadow planet.

Verse: The constant is 0-2-30-0. Subtract the calculated value from this epoch constant Dhruva to find the Mean Rahu Madhya Rahu. Divide the elapsed years of the era by two thousand five hundred and four (2504) and add the resulting degrees. Then, calculate the correction for the path of travel Gatyadhwa and subtract the seconds. Subtract the current year from the cycle of 3600; multiply the remainder by 27 and divide by 3150 to find the seconds of arc for the darkness original: "Tamas," a poetic name for Rahu.

Explanation: Multiply the total elapsed days Dyugana by 3 and place the result in two positions. The first position represents the minutes of arc. Divide the second position by 1004 to find the degrees. Add these two together to get the total movement of Rahu. Subtract this value from the epoch constant Dhruva of 0-2-30-0. Then, divide the elapsed years of the era Trigunabda by 2504 and add the resulting degrees. Apply the longitudinal correction Desantara Samskara adjustment based on the observer's distance from the prime meridian at Ujjain. Finally, subtract the years elapsed from 3600, multiply the remainder by 27, and divide by 3150; subtract these resulting seconds to arrive at the position of Rahu.

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Calculation for Mars

original: "Kuja Sadhanam"

Verse: Divide the total elapsed days by two and place the result in two positions. With the multiplier of twenty-one (21), add the degrees and minutes... the epoch constant for Mars is always 0-12-20-46. Divide the elapsed years of the era by five thousand three hundred and fifty (5350)...