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

I.10 I. INTRODUCTION OF THE WORK 7
‘रुद्र’-घ्नः स‘मनुशरो’ लब्धोन‘गुणखसप्त’भिर्द्युगणः |
रोमकसिद्धान्तेऽयं नातिचिरे पौलिशेऽप्येवम् || १० ||
Days from Epoch according to Romaka
8-10. Deduct 427 from the Śaka year (elapsed) of the time taken. Multiply
the remainder by 12. Add the months gone, counting from Caitra. Put this
result in two places. In one place, multiply it by 7, divide by 228 and take the
quotient which constitute the intercalary months. Add this to the result kept
in the second place. (The total are the synodic months gone.) Multiply this by
30 and add the tithis counted from śukla-pratipad to the current tithi. Put the
sum in two places. In one place multiply by 11, add 514, divide by 703 and
take the quotient, (which constitute the elided days or avamas). Deduct this
from the sum put in the other place. The remainder are the ‘Days from
Epoch’ (dyugaṇa), the moment of Epoch being mid-sunset at Yavanapura,
beginning Monday when the first tithi of Caitra was about to begin.
This rule is according to the Romaka. It can be taken as the Pauliśa rule also,
provided the time taken for computation is not very far from the Epoch. (or
the part of the rule for avama may be used for the Pauliśa also, provided the
taken date is not very far from the Epoch; or in the Pauliśa too the movement
of Epoch is mid-sunset at Yavanapura, beginning Monday.)
Example 1 . Find the Days from Epoch for Tuesday the sixth day of the dark fortnight of Āṣāḍha, Śaka 499
(elapsed).
Śaka year (elapsed) of date is 499. 499 − 427 = 72 years gone. Months gone = 72 × 12 + months
counted from Caitra upto Āṣāḍha = 72 × 12 + 3 = 867.
867 × 7 ÷ 228 = 6069 ÷ 228 = 26 867
141
(= Q) + ───── (= Rem) 26
228 Adding the quotient ────
Synodic months gone 893
The tithis = 893 × 30 + tithis in the current month = 893 × 30 + 21 = 26,811
(26,811 × 11 + 514) ÷ 703 = 420 (= Q) + 175/703 (= Rem) 26,811
Deducting the quotient 420
─────
Days from Epoch gone 26,391
8-10. Quoted by Utpala on BS 2. (p.30) c. B1. युतो त्रिमासैः; B2. युतो द्विमासैः
8c. A2. अद्धस्त d. A1.2. द्विष्ठः; B1.2. द्विस्थः; U. धःस्थः
d. A1.2. सौम्य; B1.2. भौम्य; D. भौम A1. ॰शघ्र॰
A1.2. C. D. U. दिवसाद्ये 10b. B1.2. लब्ध्योनो B1. यो नाति
9a. A2. माग्नीकृते A2. समाग्ने c. A1.2. सिद्धांतोयं A2. संदाभि
b. A1.2. द्विष्ठे; B1.2. द्विस्थे A1.2. पक्षै; B1.3. पक्ष्यैः