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Zodiacal Circumference
"How many parts does Moon move in one muhūrta (48 minutes)?
Moon) moves 1768 parts of the mandala (diurnal circle) on which (Moon) moves, whereas the mandala (diurnal circle) is divided into 109800 parts.
How many parts does Sun move in one muhurta ? (The Sun) moves 1830 parts of the mandala (diurnal circle) on which (Sun) moves, whereas the mandala (diurnal circle) is divided into 109800 parts,
: The rationale of this expression is easily discernible.
The two moons describe a maņdala (diurnal circle) of 109800 parts in pne lunar sāvaņa day (moonrise to moonrise).
Velocity of either Moon - 109800 parts/lunar sāvaņa day
= 54900 parts/lunar sāvaņa day Again 1768 lunar sāvana days = 1830 days of 30 muhurtas each
1768 muhurtas
1830 x 30 54900 1 lunar sāvana day = -
1769 · Velocity of either Moon = 1768 Parts/muburtas
Similarly, Velocity of either Sun = usowo parts/day of 30 muhurtas
- 1830 parts/ days This indicates that the zodiacal circumference was graduated into 54900 celestial parts (gagana khandas).
It may be seen that this number 54900 is the same as the number of muhurtas in a 5-year cycle, for One 5-year-cycle = 1830 days = 54900 muhürtas
. .: 1 day = 30 muhurtas) Numerically,
54900 C.P. = 54900 muhurtas in a five-year cycle. Thus the earlier concept of dividing zodiacal circle in the ratio of muhurtas of the 28 nakatras (asterism) in a nakşatra month (sidereal revolution of Moon) was further developed into dividing zodiacal circle in the ratio of respective sums of muhurtas of the 28 nakşatras (asterisms) in a 5-year cycle.
One 5-year cycle = 67 nakșatra months10 (Sidereal revolutions of Moon. Numerically,
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