Zodiac - According to traditional astrology the zodiac commences from a constant point. This constant point is 1800 away from Chitra Nakshatra. But according to Western Astrology the zodiac commences from Aries sign 0 degree and retreats back by 50.23 seconds per year.
Sayana and Niryana System - According to western astrology the sun is pivot to calculate or delineate the results. Moon is the central point for all calculations in Indian Astrology. According to Western Astrology the Sun moves on Aries sign to between 21 March to 20 April while the Sun moves on Pisces sign between this period as per Hindu Astrology.
Ayanamsa - In Western Astrology or Sayana system for the calculations of constellations and planets an imaginary constant point is conceived. This constant point never changes. Therefore, the position of constellations and planets also does not change.The distance between this constant point and vernal equinox (the beginning point of Aries Sign) is called Ayanamsa.
Day - The period from sunrise to next sunrise is termed as day in traditional astrology while in civil time the day changes after 12.00 midnight.
House of Bhava and Cusp - According to Indian astrology the zodiac is divided into twelve parts. Each part is called house or Bhava. The longitude of zodiac is 360°. Therefore, each part is of thirty degree in longitude. The word cusp though signifies a house yet it has different meaning from general sense of a house or Bhava. Cusp is actually the beginning point of a house. The beginning point of a house is considered to be very influential as well as powerful. This is generally a western concept and quite scientific in nature. In Placidus system of house division each Bhava or house varies in longitude. A particular Bhava may be of 30 degree or more or less from 30 degree but the total of 12 cusps or houses will always be 360 degrees in longitude.
Transit or Gochara - The entrance of the planet into the sign is called transit or Gochara. The transit effect of the planets is studied in respect to the position of moon at the time of birth. Now-a-days many astrologers read transit in respect to ascendant.
Constellation - There are 27 constellations. Though, one more constellation, i.e. Abhijeet, find place among the constellations but it is not used. Each constellation measures 13°-20' or 800 minutes in longitude. These 27 constellations are divided among nine planets. Each planet consist of 2¼ stars of 9 Padas. These 27 constellations are further divided into 249 parts and each part is called sub-lord.
Sub-Lord - The 27 constellations were divided into 249 parts. Each part is called sub lord.
Significators - It is also a new concept. Significators signify the matter in question. In fact the significators hypothesis rests on the use of constellations lord in predictive astrology.
This is a creation of Dr. Arastu Prabhakar.
