________________
94
THE CHRONOLOGICAL SYSTEMS OF GUJARAT
The dates in each group are again sub-divided sourcewise, namely under (i) stone, stone-pillar and copper-plate inscriptions, (ii) image inscriptions and (iii) Prasastis.
The equivalent dates are generally taken from the Tables given in Indian Ephemeris by Pillai. In Indian chronology the lunar day is generally ascribed to the week-day on which it ends, as it is connected with that week-day at the time of sunrise. In the case of the equivalent date which well corresponds to the given one, the ending moment of the given tithi will also be given. This moment is generally derived from the fraction of the day given in Pillai's Tables in relation to mean sunrise.
When in some cases the given tithi does not tally with the given week-day, the moment of the commence ment of the tithi is derived from the ending moment of the tithi of the previous day and taken into consideration, as sometimes the given tithi is construed with the week-day on which it commences.
When the given date falls short of equivalence by a day or so and the ending or commencing moment of the given tithi fails very proximate to sunrise which marks the upper or lower limit of a civil day, the results given in Tables based on mean sunrise have to be revised and modified on the basis of local and true sunrise.
Similarly the results given on the basis of the Surya Siddhanta sometimes fall short of verification by some minutes or an hour or so. So they be revised and modified on the basis of the Brahma
have to
Jain Education International
For Personal & Private Use Only
www.jainelibrary.org
