Each planet (plus Sun, Moon, and Dragon) has certain places in the sky where it has a special seat, where it is comfortable and acts strongly. The entire 360° of the sky is divided into more than 380 little sections, each of which is "owned" or "ruled" by one of the planets. Some sections are less than one degree, and the largest are just over 2°. These little sections are an ancient astrological tradition which was revived by K.S. Krishnamurti. The rulers of these little sections (Kalanshas, "Subs") enabled him to predict events accurately to the minute!

Each little section of the sky has three planetary rulers: (1) its Large Constellation Ruler, (2) its Small Constellation Ruler, and (3) its Little Ruler. You're probably familiar with the Large Constellations Aries through Pisces. Although these constellations are not exactly 30° each, and some of them even overlap (such as Cancer and Leo—see Sky Map below), the Rulerships of these 12 Large Constellations are 30° each.

Most Western astrologers are unaware that there are also 27 Small Constellations of 13°20' each (Nakshatras). Vedic and Arabian texts give great importance to these Small Constellations. Some of these are comprised of a single bright star, such as the red star Aldeberan (Growing, Rohini) and the bright star Arcturus (Independent, Svati). Other Small Constellations include several stars, such as the tail of the Scorpion (Root, Mula) and a group of many faint stars close together in the Waterpot Constellation (100 Healers, Shatabhisha). Each Small Constellation also has a planetary ruler that "rules" over the 13°20' area.

To predict events and fine-tune astrology readings, you need to know the three planetary rulers of each planet and house in a chart. This is easy. First, calculate the chart in Sidereal Zodiac. If you do not have a preferred ayanamsha, use Lahiri (the most common), Krishnamurti (very close to it), or Raman (close to it). You can find the positions of the planets online. AstroDienst maintains the Swiss Ephemeris, which is considered an accurate standard.

Look up each position on the following chart. The degree, minute and second of the beginning of each arc are listed. For example, if a planet is at 7° 46' Sagittarius in the Sidereal zodiac (which is about 14° Scorpio in the Tropical zodiac), since Sagittarius is a Fire sign, look under Fire and see that at 7° 33' 20" Jupiter Little Arc begins, and the next planet's Little Arc begins at 8° 20' 0". So the planet is in Jupiter's Little Arc, in the Small Constellation "Root" ruled by Dragon Tail (see legend below), and in Sagittarius ruleed by Jupiter. The three Ruling Planets of this point are therefore Jupiter, Dragon Tail, and Jupiter. (For reference, the last column shows the total arc "size" of each Little Arc.)

You can now find the three Ruling Planets of each and every planet, house cusp, and midpoint in any astrology chart by simply looking them up here. An example below shows the results for a sample horoscope.

Little Rulers are absolutely essential for distinguishing twins. Identical twins are usually born within 15 minutes of one another. Without using the Little Rulers, the charts for both twins are usually identical.

The Little Rulers of planet positions and house cusps are extremely valuable indicators for specific matters. They are also valuable in charts-of-the-moment, which can be used for rectifying birth times and answering questions not associated with a birth chart.

Ancient astrology did not include Uranus, Neptune, or Pluto, although there is evidence that they were known in ancient times. These "outer planets" are included in the charts below. If you wish to use only the inner planets, simply substitute Saturn for Uranus, Jupiter for Neptune, and Dragon Head for Pluto.

As an example, here is Mother Teresa's horoscope, with the three planetary rulers for each planet and house cusp on the right.