EASTERN versus WESTERN Astrology

Westerners follow the Sayana system of astrology and the easterners follow the Nirayana system of astrology. The main difference in these two systems is in what is called Ayanamsa. Westerners includes Ayanamsa in their calculations whilst easterners excludes Ayanamsa in their calculations.

There are twenty-seven constellations recognised in astrology. The first constellation is called Asvida. There are twelve 'Houses' recognised in astrology. The first 'House' is called Aries.

Eastern system of astrology is based on the basis that Asvida constellation, 'House' Aries and planet Sun commences at the same point on 12 or 13 or 14 April each year. Many countries celebrate New Year on one of these three days chosen astrologically.

Western system of astrology is based on the basis that Asvida constellation, 'House' Aries and planet Sun were at the same point on a date in the third century. According to this system "House' Aries traverse but Asvida constellation remains static.

It is this distance what is called Ayanamsa.

Therefore, Birth Charts prepared on these two systems will vary significantly.

If you require the Sayana values based on this program, just add the Ayanamsa relevant for the chosen year.

Another major difference between western and eastern astrology is in the method adopted in timing future events. Easterners use the Main
Period, Sub Period and Sub Sub method using the relevant Ruling Planet. Westerners mostly use progressions with major arc and the minor arc
playing an import part.

Deciding compatibility of two Birth Charts based on lunar mansions, auspicious times and naming a child are not practiced by Western astrologers.