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COMPUTATION OF DATES.
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(2). Subtract from 30 the tithi for the beginning of the given year. The remainder is the Index of new-moon. Add to it i.e. to its complete tithis) the number of the tithi given in the date; the sum is the Index of the tithi. It should however be remarked that, if the tithi belongs to the dark fortnight, 15 must be added to the above sum to find the Index of the tithi, both for the anánta and púrpimánta schemes.
(3). Then look out, in Table III, in the solar month synonymous with the lunar month given in the date, the day whose lithi is nearest to, but smaller than, the Index of new-moon. Now, if the date belong to the amanta scheme, or if it belong to the bright fortnight of either scheme, look out, after new-moon day, the day whose tithi is nearest to, but smaller than, the index of the tithi. But the tithis of the dark fortnight in the pirnimanta scheme precede new-moon. Add the Feria, tithi, and c's an. of the day indi. cated by the Index of the tithi, to the quantities found for the beginning of the given year, and add to the tithi thus found the equation for ('s an. from the Auxiliary Table III. The result shows what tithi was current at the beginning of the day at Lanka. The end of the tithi can be found approximately by Table IV.
Er. l. Samvat 1232 Bhadrapada-sudi 13, Ravau (northern year Sam 1232=K.Y. 4278, Ravau= Sunday=1.)
Fer. Tithi. (An. 4200 0
(1)
9 2.19 .10
699 Ind.. or new moon = 80-8.46 = 26-54. 78 years (5) 1.27 45 Ind. tithi sudi 13, is 2654+13--30 = 9:54. 4276 K.Y. (6) 3.46 153 3rd Åśvina (2) 8.83 661
(0) 1229 814 C's an. 814, eq. = 3
(1) 12-32=Sunday, sudi 13. Ex. 2. Samvat 1011, Bhadrapada-badi 11, Sukradine (prirnimánta, northern year), Sam 1011=4055
K.Y.
Fer.
Tithi. C's An. 4000 K.Y.
8.98 523 Ind .=80—1731=12-69. 55 years (6) 8.33 63 lod badi 11, is 15+11+12-89-30=8-69. 4055 K.Y. (7) 17-31 586 4th Bhadr. (0) 8-31 573
(7) · 25.62 159 ('s an. 159, eq.
+0.77
(7) 26:39 Accordingly, at the beginning of Saturday (= 7) the 27th tithi, or the 12th tithi of the dark fortnight, was running; and the 11th tilhi ended on the preceding day, a Friday, which therefore was the day intended in the date.
E. 3. Samvat 1236, Vaisakha-Budi 15, Sukre, southern year; bence Vaisakha does not belong to the corresponding solar year, 4280 K.Y., but to the following year 4281; see above $15.
Fer. Tithi. ('s An. 4200 K.Y. (1) 2.19 699 Ind. is 1:52.
81 years (4) 26.29 725. Ind. suili 15 = 16-52. 4281 K.Y. (5) 28.48 42+ 19 Vaisakha (2) 16.28
(7) 14.76 I's an. 5, eq.
+0.43
(7) 1519 The 15th rithi having ended on the preceding day, which was a Friday (6), the date is correct.
* We may also take the tithi which is equal to the Index or even a little lorger.
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