The traditional Sidereal Natal chart is a square divided into 12 smaller squares, which represent both the houses and the signs. Sidereal Houses, Signs, and Planets The three essential tools for casting a Sidereal chart are the houses, the planetary placements, and the signs. See also Cafe Astrology’s Free Reports site, including full interpretations of the natal chart, transits, and compatibility. Note about house systems: If you’re new to astrology, simply stick with the Placidus house system on this page and later in your studies, you can explore different house systems. Jun 26, 1993 Ariana Grande-Butera (born June 26, 1993), known professionally as Ariana Grande, is an American actress and singer-songwriter. Ariana grew up in Boca Raton, Florida where she attended North Broward Preparatory School.Grande made her acting debut in 2008 in the role of Charlotte in 13 on Broadway. This video covers what sidereal astrology is and the difference between tropical vs sidereal astrology. Tropical astrology is what we most commonly find onli.

What is astrology?


Once upon a time, astrology was a distinguished profession. The job qualifications were advanced mathematics, observation skills, ability to think carefully, an excellent memory and deductive resoning skills. No crystal balls to help out. That’s right, astrologers are not psychics. Astrologers need a day, time and place to have a frame of reference. From those reference points, a map is drawn, originally using the constellations as backdrop. This map is called a chart and we use find information about a person, people or even a place.

Tropical vs. Sidereal Astrology

Tropical astrology is the hands down winner in the western world. The first day of Spring equals the first day of Aries. the first day of Autumn is the first day of Libra. All 12 zodiac signs are divided on a 360 degree circle from those two dates, regardless of leap year, time zone changes or anything else. It is a precise and beautifully executed mathematical construct.

It is also flawed reasoning.

1) The seasons no longer have anything to do with the constellations. They used to, but over the last 2000 years the universe has shifted a bit from our perspective. On the first day of Spring, when babies are born they will be told “you are an Aries”, by people who use Tropical astrology, ignoring or simply unaware the Sun is physically in the constellation Pisces. And won’t be moving to the constellation of Aries for another 3 weeks.

2) Planets don’t bother to check the clock. A child born shortly after midnight on June 21, 2005 in England will be told he is a Cancer. Another child born at that exact same moment in time across the Atlantic in Washing DC, where it is still June 20, is told he is a Gemini.That’s Tropical astrology for you.

Using the constellations requires thought. It isn’t so neat and tidy, especially on days where the Sun, or any planet moves into different constellations. Modern technology makes using the constellation based Sidereal Zodiac easy to look up, no slide rule or trigonometry required. The Sidereal Zodiac is what astronomers, mariners, Vedic and Sidereal astrologers use.

Age of AquariuS, not yet

The general population has been singing about the Age of Aquarius, and grossly misinterpreting it, since 1968. The Sun is still in early Pisces as it crosses the celestial equator, signifying the first day of Spring in the northern hemisphere. And as we are still in the Piscine Age, the weekly horoscopes you find here begin with Pisces. Before Pisces, the time epoch is called the Iron Age, that was when Aries marked Spring in the northern hemisphere. Before that, the Bronze or Copper Age, it was the constellation Taurus the Sun entered. Moon in 11th house vedic astrology. And before we are so unkind to Gemini as to equate their Sun Sign with brutes throwing stones in the pre-historic Stone Age, let me point out that developing tools and communication during that particular epoch of time was a spectacular leap for mankind.

Zodiacs and House systems

Having said all that, there are several different math formulas to decided where one constellation starts and ends. There are also dozens of ways to divide up the life arenas that astrologers call Houses. This is not the time nor place to go into all of that. If you wonder what I use for the general weekly horoscopes or any question you may ask, it is the Lahiri Zodiac and the Whole Signs Houses.

Mercury Retrograde

From the Earth’s perspective, all planets will appear to be going backwards except our Moon which is orbiting around us and the Sun, which earth is orbiting around. Three times a year Mercury appears to be going backwards in the sky, again from our perspective, for three weeks each time. There are nine weeks worth of births every year with Mercury Retrograde. If it isn’t you, consider making friends with one or two of these folks. Have your Mercury Retrograde buddy make buying, travel and electronic purchasing decisions for you. They will be much more likely to navigate the pitfalls of inaccurate advertising , over buying or getting the dud than you will be. Mistakes are made. Printing and communication errors are legendary. As it isn’t practical to hide out in a cave for nine weeks a year, do as I do. Do more research before you commit to anything. Be gracious when someone else fumbles, takes longer than you think it should or needs a little more help. Let mistakes teach us to be better. It is good time to go back to a previously started and discarded project. Or promoting yourself or an idea, people will gladly listen to a good story now. And it is a terrific time to sell something you no longer need, because, well, hmmm…. caveat emptor.

Sidereal and tropical are terms used to describe two different definitions of a year. In astrology, they refer to two different systems of ecliptic coordinates used to divide the ecliptic into twelve 'signs'. Each sign is divided into 30 degrees, making a total of 360 degrees.[1]

While sidereal systems of astrology define the signs relative to the apparent backwards movement of fixed stars of about 1 degree every 72 years from the perspective of the Earth, tropical systems fix the vernal point or vernal equinox (also known as the March equinox in the Northern hemisphere) to 0 degrees of Aries and define the rest of the zodiac from this point.[2][3][4] Sidereal astrology uses corrective systems known as ayanamsas (Sanskrit: 'ayana' 'movement' + 'aṃśa' 'component') to account for the precession of equinoxes, whereas tropical astrology does not use such measures.[3][5] This has caused the two systems, which were identical around 2,000 years ago, to drift apart over the centuries.[2][3][5]

Ayanamsa systems used in Hindu astrology (also known as Vedic astrology) include the Lahiri ayanamsa and the Raman ayanamsa.[6] The Fagan-Bradley ayanamsa is an example of an ayanamsa system used in Western sidereal astrology.[6] As of 2020, sun signs calculated using the Sri Yukteswar ayanamsa were around 23 degrees behind tropical sun signs.[5] Per these calculations, persons born between March 12 - April 12, for instance, would have the sun sign of Pisces.[5] By contrast, persons born between March 21 - April 19 would have the sun sign of Aries per tropical calculations.[7]

Cyril Fagan, a Western sidereal astrologer, assumed the origin of the zodiac to be based on a major conjunction that occurred in 786 BC when the vernal equinox lay somewhere in mid-Aries[8] corresponding to a difference of some 39 degrees or days.

How To Read A Sidereal Astrology Chart

Precession of equinoxes, the changing position of the vernal equinox over the course of about 25,800 years. The yellow line is a section of the ecliptic, the apparent path the Sun appears to follow over the course of an Earth year. The purple line is the celestial equator, the projection of Earth's equator onto the celestial sphere. The point (red) where these two lines cross is the vernal equinox. In 1500 BCE, it was near the end of Aries; in 500 BCE, it was near the beginning of Aries; and in 1000 to 2500 CE Pisces.

Astronomic zodiac[edit]

A small number of sidereal astrologers do not take the astrological signs as an equal division of the ecliptic but define their signs based on the actual width of the individual constellations. They also include constellations that are disregarded by the traditional zodiac but are still in contact with the ecliptic.[citation needed]

Sidereal Astrology Chart Free

Stephen Schmidt in 1970 introduced Astrology 14, a system with additional signs based on the constellations of Ophiuchus and Cetus.[citation needed]

In 1995, Walter Berg introduced his 13-sign zodiac, which has the additional sign of Ophiuchus. Berg's system was well received in Japan after his book was translated by radio host Mizui Kumi (水井久美) in 1996.[citation needed]

For the purpose of determining the constellations in contact with the ecliptic, the constellation boundaries as defined by the International Astronomical Union in 1930 are used. For example, the Sun enters the IAU boundary of Aries on April 19 at the lower right corner, a position that is still rather closer to the 'body' of Pisces than of Aries. The IAU defined the constellation boundaries without consideration of astrological purposes.[citation needed]

The dates the Sun passes through the 13 astronomical constellations of the ecliptic are listed below, accurate to the year 2011. The dates will progress by an increment of one day every 70.5 years. The corresponding tropical and sidereal dates are given as well.

SymbolConstellationTropical date[7]Sidereal Date
Cyril Fagan[citation needed]
Based on IAU boundaries
Walter Berg[9]
AriesMarch 21 – April 20April 15 – May 15April 18 – May 13
TaurusApril 21 – May 21May 16 – June 15May 13 – June 21
GeminiMay 22 – June 21June 16 – July 16June 21 – July 20
CancerJune 22 – July 22July 17 – August 16July 20 – August 10
LeoJuly 23 – August 22August 17 – September 16August 10 – September 16
VirgoAugust 23 – September 23September 17 – October 17September 16 – October 30
LibraSeptember 24 – October 23October 18 – November 16October 30 – November 23
ScorpioOctober 24 – November 22November 17 – December 16November 23 – November 29
OphiuchusN/ANovember 29 – December 17
SagittariusNovember 23 – December 21December 17 – January 15December 17 – January 20
CapricornDecember 22 – January 20January 16 – February 14January 20 – February 16
AquariusJanuary 21 – February 19February 15 – March 15February 16 – March 11
PiscesFebruary 20 – March 20March 16 – April 14March 11 – April 18

See also[edit]

Sidereal Astrology Charts Online


  1. ^'The Tropical, Sidereal & Constellational Zodiacs: the Power of World View'. Retrieved 2020-07-29.
  2. ^ abSubramanian, Vijaya. 'Sidereal and Tropical Zodiac – Vijaya Jyoti'. Retrieved 2020-07-29.
  3. ^ abcgalacticcenter (2016-10-10). 'What is Vedic Astrology?'. Galactic Center with Joni Patry. Retrieved 2020-07-29.
  4. ^Taya. 'Understanding Sidereal Charts'. Retrieved 2020-07-29.
  5. ^ abcdVallée, Guylaine (2020-03-01). 'What's Your Vedic Astrological Sign?'. Birla Vedic Center. Retrieved 2020-07-29.
  6. ^ ab'Ayanamshas in Sidereal Astrology'. Retrieved 2020-07-29.
  7. ^ ab'Zodiac Sign Dates: What Are The Dates for Every Star Sign?'. Astrostyle: Astrology and Daily, Weekly, Monthly Horoscopes by The AstroTwins. Retrieved 2020-07-29.
  8. ^
  9. ^'New astrological sign: Professor finds horoscopes may be a little off kilter'. Los Angeles Times. Times. January 14, 2011. Archived from the original on January 19, 2011.
  • 'The Real Constellations of the Zodiac.' Dr. Lee T. Shapiro, Planetarian, Vol 6, #1, Spring (1977). [1]
  • 'The Real, Real Constellations of the Zodiac.' John Mosley, Planetarian, Vol. 28, # 4, December (1999).[2]
  • 'The Primer of Sidereal Astrology,' Cyril Fagin and Brigadier R. C. Firebrace, American Federation of Astrologers, Inc., (1971) ISBN0-86690-427-1
  • A History of Western Astrology, by S. Jim Tester, 1987, republished by Boydell Press (January 1999),ISBN0-85115-255-4, ISBN978-0-85115-255-4
  • Raymond, Andrew (1995). Secrets of the Sphinx Mysteries of the Ages Revealed. Hawaii: U N I Productions. ISBN0-9646954-6-4.

External links[edit]

Sidereal Astrology Chart Calculator

  • Vedic astrology -- critically examined by Dieter Koch, with an extended discussion of sidereal and tropical astrology.
  • Sidereal Right Ascensions by Juan Antonio Revilla

Sidereal Astrology Chart Compatibility

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