Constellation Tropical date       Sidereal Date     Sun is in constellation
Aquarius      Jan 20 - Feb 18   Feb 15 - Mar 14   Feb 16 - Mar 11
Pisces         Feb 19 - Mar 20   Mar 15 - Apr 14   Mar 12 - Apr 18

The dates the Sun passes through pisces constellation of the ecliptic are listed, accurate to the year 2002. The dates will increment by one day every 70½ years, and already several have changed. The corresponding tropical and sidereal dates are given as well.



The classical zodiac of Greek astronomy is tropical in nature, defining the signs relative to vernal equinox regardless of the position of constellations. Western astrology traditionally uses this system.

Sidereal astrology ties its signs of the zodiac to the actual constellations

The precession of the equinoxes, a phenomenon discovered c. 130 BC by Hipparchus and known to Ptolemy, results in a shift between the two systems of about one degree every 70 years.

The vernal equinox lay near the beginning of the Aries constellation around 500 BC, consistent with a Babylonian origin of the system.

While classical tropical astrology is based on the orientation of the Earth relative to the Sun and planets of the solar system, sidereal astrology deals with the position of the Earth relative to both of these as well as the stars of the celestial sphere. The actual positions of certain fixed stars as well as their constellations is an additional consideration in the horoscope. (Over very long astronomical time scales, these fixed stars are of course themselves far from stationary.)

Some sidereal astrologers denounce tropical astrologers for failing to relate to the "actual heavens," seeing in this a fundamental degeneration of the subject

Yes, everyone knows about the sidereal zodiac and how it no longer cooresponds with the Tropical zodiac.  However, the Sidereal system doesn't account for Serpentarius, so, I don't think they have any more of a right to say it 'fits' any better than Tropical Zodiac.  Sol is only in Scorpio for one week, yet the Sidereal system which is so acclaimed for 'relating to the actual heavens' says nothing of this.  At least the Tropical Zodiac is what it is and is stationed from the view of Earth instead of against a backdrop of Fixed Stars which are far from stationary and very, very far away and inclined. /rant