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

256 PAÑCASIDDHĀNTIKĀ XIII.32
विषुवल्लेखाऽधस्ताल्लङ्का तस्यां समो भगणगोलः ।
त्रिंशन्नाड्यो दिवसः त्रिंशच्च तस्यां सदा च निशा ॥ २९ ॥
27. For the people on Meru, i.e. at the North Pole, the Sun is visible at a
stretch, when it is in the six signs Meṣa to Kanyā. When it is in the next six
signs, it is visible to the demons at the South pole, at a stretch.
Note. Moving in the first six signs, the Sun’s zenith distance is less than 90° at the North pole and
it is visible to the Devas there. Being greater than 90° at the South pole it is invisible to the Asuras
at the South pole. It is vice versa in the next six signs. Thus the Devas and the Asuras have their day
and night alternately, each for six months at a stretch.
28. For them, the first point of Meṣa is the Lagna or Orient ecliptic point,
permanently, Mars is the Lord of the Drekkāṇa, Navāṁśa, Dvadaśāṁśa and
Triṁśāṁśa lagnas permanently.
Note. The first point of Meṣa moves round and round there on the horizon, and no other point
rises or sets. The lordships are as prescribed in the Horāśāstra. There the Lord of Meṣa is not only
the master the Rāśi-lagna, but also of Drekkāṇa, Navāṁśa etc. lagnas.
29. Laṅkā is beneath the celestial equator, i.e. the celestial equator itself is the
prime vertical at Laṅkā. There the stellar sphere is equally divided (into the
northern half with the N.P. at its centre, and the southern half with the S.P.
at its centre). There the day and night are always 30 nāḍīs each.
Note. This is because all diurnal circles of the Sun are divided into two equal halves by the
equatorial horizon. Note also that what is said of Laṅkā applies to all places on the equator.
[वेधप्रकारः]
सलिलेन समं कृत्वा तुङ्गं फलकं यथादिशं दृष्ट्वा ।
दक्षिणकोट्यां शङ्कुं फलकप्रमितं व्यवस्थाप्य ॥ ३० ॥
ऋजुशङ्कुबुध्नविन्यस्तलोचनो नमयेत्तथा शङ्कुम् ।
भवति यथा शङ्कग्रं ध्रुवता दृष्टिमध्यस्थम् ॥ ३१ ॥
पतितेन भवति वेधो लङ्कायां ऊर्ध्वगेन तु सुमेरौ ।
विनतेन च तथान्तराले फलके (चाक्षोर्ध्व) सूत्रसमम् ॥ ३२ ॥
27a. B1.3.सक्तदुदितः; B2.सतदुदितः 29a. B.विषुवध्रे (B2.ल्ले) खाधस्ताल्छत्रे (B2.ल्ल) ङ्का
b. B.भेकपृष्ट c. B.त्रिंश नाड्यो A.B.द्विवस
c-d. B.षन्दुवरन्यस्तो (B2.वन्त्यस्तो) दृश्यः d. A.B.C.D.U.त्रिंशत्तस्यां च सदा (A.सहा)
28a. A.लग्ने; B.लगोत्यंशश्च (B1.2.शदा; U.निशा)
b. B.पुत्रः स्यात्
d. B.तस्मैव