Epigraphia Indica Vol 17

Author(s): F W Thomas, H Krishna Sastri
Publisher: Archaeological Survey of India

Page 47

EPIGRAPHIA INDICA.
[Vol. XVII.
In A.D. 625-26 the small value of a at the moment of Měsha-sankranti shews that there could have been no intercalation in that year (see above, $ 306, xi).
Example 4. To find the mean moon's nakshatra, or her place in the ecliptic circle at any moment.
(See 308 above.) We have to find the value of s, the sun's mean long., at the given moment and the value at the same moment of a, the index of the mean tithi. . + a=n, the index of the nakshatra. I assume that, as usual, the values wanted are those at mean sunrise on the given day; for later moments they can easily be found, from Table LXV for a, and from Table LXXXI for e. The example here given will shew the process of work.
Required the nakshatra at mean sunrise on the day referred to in Example 2, viz. Ashadha Sukla 4 in K.Y. 3726, which was proved to be 14 June A.D. 625, and on which day at mean sunrise the value of a was found to be 1015.1662. The day, measured from Jan. 1, was serial number 165. In that year mean Mēsha-samkrānti took place (Table LXXVI) on Day 80 at 20h 15m after mean sunrise. The interval of whole days between 20h 15m after mean sunring on the day of Mösha-samkranti and 20h 15 after mean sunrise on the given day is (165-80=) 85.
.
.
2327.1179
(Table LXXX). Interval of 85 days. Less (Table LXXXT) for 201 . .
for 15m
. . 228149 0-2852
23-1001
.
.
-23-1001
At mean sunrise on the day Ashadba buk. 4, Add a, as found for that mean sunrise
.
.s=2304-0178 • 1015-1662
At mean sunrise on that day (=14 June)
.
.
on=3319-1840
Table VIII Indian Calendar, or Table LXVIII above, shews that the moon was then in the nakshatra Aslesha by the equal-space system and by Garga, but in Magh& by the Bråhma Siddhanta.
The value of , 3319-1840, in 10,000ths of the circle, can be converted into degrees, if required, by Table XLV B, above. It = 119° 29' 26". That was the mean moon's place.
Example 5. The lagna. (See Indian Chronography, $ 193, p. 74, and Example 63, p. 127.) Required to ascertain at what hour on the day Ashādha suk. 4 K.Y. 3726, or 14 June A.D. 625, the sign Tuld became lagna.
At mean sunrise the sun's mean long. 8 was (Example 4) 2304-0178, roughly (Tablo XLV above) 82° 57'. The first point of Tula (Libra) (Indian Chronography, Table XXII) is 180°. 180° - 82° 57' = 97° '. 97° x 4 = 888m, or 6h 28m. 3' X 4 = 12 The first point of Tulk, therefore, was lagna at 6h 28m 12' after mean sunrise on the day in question. It lasted for 2 honns, when Vrifchika (Scorpio) became lagna.
A ta the system me Indian Calendar, $88, p. 21; Indian Chronograpky, 113sto.