Jain Journal 1984 01

Author(s): Jain Bhawan Publication
Publisher: Jain Bhawan Publication

Page 13

86
JAIN JOURNAL
of any solar mandala (Sun's diurnal circle) from periphery of Meru's cross-section on flat earth denotes its angular distance from north pole. Probably this is why distance of any solar mandala is given here from periphery of base of Meru on flat earth and not from axis of Meru and this distance may therefore conveniently be called as equivalent to north polar distance (NPD) of the particular solar mandala (Sun's diurnal circle) or NPD of the Sun while occupying that particular mandala.
d
Thus evidently we have d (NPD) = 2
Yojanas/solar mandala
dt
Or with the application of eq. No. (2) it may be written as
(NPD) = 2 Yojana/day (day and night).
d
48
Integrating both sides, we have
48
NPD
=
27 dt Yojanas +c...
.......(3)
wherec
n
= Constant = Number of solar mandalas (Sun's diurnal circles)
already embraced by Sun in its southern course or yet to be embraced in its northern course.
Applying initial conditions i.e., when the Sun occupies the innermost mandala (Sun's diurnal circle on Summer solstice day),
and
n=0,
NPD = 44820 y, from eq. No. (3), we have
C = 44820 y,
be written as
NPD
dt Yojanas +44820 y.......
Thus NPD of any solar mandala (Sun's diurnal circle projected on earth's surface) can be tout de suits reckoned from this equation. For example, when the Sun occupies the outermost mandala (Sun's diurnal circle on Winter solstice day)