________________
246
EPIGRAPHIA INDICA.
For the salar month and date
Table I, cols. 13-17, shews that true Mesha-samkranti in the given year took place on day 87 (measured from 1 Jan.), Wednesday, at 14h 2m after mean sunrise. The interval to Dhanus-samkranti (Indian Chronography, Table XVIIIA) was 246d 7h 18m.
d.
1 Dhanus 334
23
23
24 Dhanus=357
d. w-d.
87
4
246
1
333
The Dhanus-samkranti took place late in the day on day 333 and by all rules the civil day called "1 Dhanus" was day 334, (6) Friday. The given day (above) being 357 there are 23 intervening days to be added to 1 Dhanus.
5
The day of the date was therefore in solar reckoning Sunday 24 Dhanus. Thus all the details of the date are proved correct by the Arya-Siddhanta.
Diff. in 4000 years
700
50
What would be the correct description of the date if it had been calculated by tho Siddhanta-Siromani? i.e. how would Sunday 23 Dec. 1649 A.D. have been described?
39
Since true Mesha-samkrānti always took place by that authority a day earlier than by the Arya-Siddhanta, the Sunday would have been 25, not 24, Dhanus.
ور
h. m.
14
2
7
18
21 20
w-d.
6
2
1 (Sunday).
The details of the tithi may, for present purposes, be taken as the same by both authorities, or almost the same.
To find the sun's true longitude, s, by the Siddhanta-Siromani, we must first ascertain the moment of occurrence of true Mesha-sam kranti in the given year by that authority. Future Tables will state this in the same way that Table I, Indian Calendar, does for the AryaSiddhanta (cols. 13-17). For the present it must be sought for. The rule is given above. The given year was K. Y. 4750. Table LIII gives us the difference between the times of Mesha-samkranti according to the Arya-Siddhanta and Siddhanta-Siromani due to the difference in their year-lengths.
(Table I) True Mesha-samk. by Arya-Siddh.
Less
h.
[VOL. XIV.
23
4
27
173.
20
5
17
42
8.
0
0
30
30
or 14 3h 42m 30s. Add to this the difference due to shift of apsis-here, shortly, 48m (col. 5). Total difference 1d 4h 30m 30%.
d. h. 172. 87 - 1
86
14 2 30
4 9
30 32
30 0
True Mesha-samk. by Siddh.-Siromani True Mesha-samkranti by the Siddhanta-Siromani took place in the given year on day 86 (measured from 1 Jan.) or Saturday 22 Dec. A.D. 1649.
