Epigraphia Indica Vol 17

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

Page 45

22
EPIGRAPHIA INDICA.
[Vol. XVII,
For the a of Chaitra sukla 1 and its day and week-day, we use either of the two processen. Process 1.
-d. At m. sunrise of m. M. S.-day, Thurs. 21 Mar.. . (5) 2231.4569 (Table LXIV obore). Next lower valne of a in the first
30 days of the Table, viz. for 6 days' interval. -(6) - 2031.7912 At mean sunrise of Fri. 15 Mar., being the day Chaitra
enkla 1 . . . . . . . . (6) 199-6657
Or, Process 2. At m. sunrise of m. Mēsha-sark. day (as above). Add (Table LXXIX for 6 days earlier) . .
. .
10- d
(5) + (1)
a . 2231-4569 +7968 2066
Result (same as above)
.
.
.
.
.
.
(6)
199-6657
Example 2. To find the mean tithi-index a for any day in the year, or any moment of any day.
Table LXXVI, cols. 19-23, states the civil day, Chaitra Sukla 1, for each year, its serial number from Jan. 1, its week-day, and its tithi-index a at mean sunrise, Calculate, from Table III Indian Calendar or Table LXIII above, the interval of whole days to mean sunrise on the given day, and, if necessary, the fraction of day subsequent to that sunrise. Add the increment of a for whole days from Table LXIV, and for fractions of the day from Table LXV, to the a given in Table LXXVI.
Whole numbers may always be used for whole days, the decimals being only resorted to for close cases and when the calculation includes a fraction of a day.
E.K. Required the tithi-index at mean sunrise on Åshidha knkla 4 in the year corresponding to A.D. 625-26; and at 8h 20m 15' after m. sunrise on that day,
dow-da a. Table LXXVI. Chait. Suk. 1, mean sunrise
(74) (6) 199:6657 Tables LXIII A. LXIV. Interval to Ash. fak. 4
and increase of a . . . . . (91) (0) 815-5005 At mean sunrise on .sh. suk. 4 day . . . (165) (6) 10161662 Day 165 was (Table IX, Indian Calendar, or Table LXIX above) 14 June A.D. 625 (6)=Friday. a=1015 shews (Table VIII or LXVIII) that sukla 4 was current at mean Runrise of that day. For the specific hour mentionedAt mean sunrise on that day . .
1015-1662 (Table LXV) . . . . .
. . Sh 1128773
20 4.7032
16 0-0588 At 8l 20m 15' after mean sunrise . . . . = 1132-8055
so un alue on meie ....
Erample 3. To find (the tithi-index, or plan of mean moon) at each of the solar sankrintie in the year (the moments of the maan sun's entrance into the several signs), and to determine whether an intercalation of a lunar month took place during the year.