पञ्चसिद्धान्तिका (आचार्य वराहमिहिर - सूर्य, रोमक, पौलिश, वासिष्ठ एवं पितामह सिद्धान्त)

180 PAÑCASIDDHĀNTIKĀ
Next, correction to Rāhu:
(i) 5 × Ø/27 = 5 × 10.4/27 = 1° 56′. As the Moon is near the Tail, this is to be subtracted.
∴ Tail − 1° 56′ = rā 2-1-0 − 1° 56′ = rā. 1-29-4.
(ii) Correction to new moon = 2 nāḍis.
(Moon + 3 rāśis) = 5 rāśis.
The declination of this point is 11° 44′.
The correction = 2 × 11° 44′/18 = 1° 18′.
As new moon is afternoon, Uttarāyaṇa, and Tail, this is additive. Adding to corrected Tail we get,
rā. 1-29-4 + 1° 18′ = rā. 2-0-22.
(iii) The nāḍis of corrected new moon before sunset = Sunset ~ cor. new moon = 60 nāḍis − nā.
51-20 = nā. 8-40.
The Moon’s declination, from its longitude, is 20° 36′.
The correction, = 8 2/3 × 20° 36′ ÷ 80 = 2° 14′.
As the Moon is between 0 and 6 rāśis, and it is Tail, this is additive.
Adding to corrected Tail, we get, rā. 2-0-22 + 2° 14′ = rā. 2-2-36.
Subtracting 1° 36′ from the corrected Tail, we have rā. 2-2-36 − 1° 36′ = rā. 2-1-0, as corrected
Rāhu to be used in the formula:
Moon ~ Rāhu = rā. 2-1-0 − rā. 2-0-0 = 1°
As this is less than 8°, there is a solar eclipse.
Duration = 3 × √(61 − 1²/4) = 5-57 nāḍis.
Half this is nā. 2-59.
Subtracting and adding this to the corrected new moon, we have:
Time of first contact = nā. 51-20 − nā. 2-59 = nā. 48-21
Time of last contact = nā. 51-20 + nā. 2-59 = nā. 54-19
We have already said that the results will be very rough.
[इति पञ्चसिद्धान्तिकायां वराहमिहिरविरचितायां
रविग्रहणं नाम सप्तमोऽध्यायः ॥]¹

1. Col. A.B.C.D. इति (A.D. om इति) पौलिशसिद्धान्ते रविग्रहणं नाम
   (A.B.D. om नाम) सप्तमोऽध्यायः
   Thus ends Chapter Seven entitled ‘Pauliśa-Siddhānta – Solar
   Eclipse’ in the Pañcasiddhāntikā composed by Varāhamihira