Free North and South Node Calculator

The North Node is the ascending intersection of the Moon's orbit with the ecliptic. At this point the Moon crosses from south celestial latitude to north celestial latitude. Helena Avelar and Luis Ribeiro describe the South Node as the opposite crossing, where the Moon moves south again.[1] The nodes are computed points rather than planets. A New Moon or Full Moon near either crossing can form an eclipse because the Sun, Moon, and Earth are aligned near one plane.[1] Alan C. Bowen and Francesca Rochberg give the slow retrograde circuit as 18.6 years.[2] That rate works out to about one sign every eighteen months, although the true node can briefly move forward.[5]

Modern karmic and evolutionary readings add a developmental doctrine. Jan Spiller treats the North Node as the psychological shift to practice and the South Node as an overemphasized response that can throw the axis out of balance.[3]Martin Schulman calls the North Node an untried future direction, while insisting that the South Node must first reach its more constructive expression.[4]For Celeste Teal, people who follow the North Node path find the most happiness and fulfillment. She describes the South Node as a possible drain or point of least resistance.[5]

Elizabeth Spring keeps the South Node's earned abilities as useful material for North Node development.[6] For Steven Forrest, the North Node is a direction that still requires choice.[7] Jeffrey Wolf Green uses stronger language of evolutionary necessity.[8] Liz Greene gives neither end an inherent advantage and reads both as one active polarity.[9]In Mark Jones's account, past and future are practical labels for one arc of motion rather than a moral ranking.[10]

The North Node and South Node form one axis. They remain exactly 180 degrees apart, so every North Node sign has the opposite South Node sign. Spiller makes this pairing central to her method: her North Node chapters describe both ends and the work of bringing them into balance.[3] Greene reaches a similar structural conclusion from another doctrine. A transit or progression touching one node also activates the other, so she reads the two houses as a polarity.[9]

The North Node glyph is ☊, and the South Node glyph is ☋. Melanie Reinhart gives their older Latin names as Caput Draconis and Cauda Draconis, the Dragon's Head and Dragon's Tail.[11] In Indian astrology, Rahu names the North Node and Ketu names the South Node. Reinhart gives those names and integrates Indian material into her account.[11] Liz Greene explicitly keeps the Indian and modern western readings distinct, calling them different rather than better or worse.[9]

Abu Ma'shar and al-Qabisi preserve another rule. The Head increases the quality of a joined planet, whether helpful or difficult, while the Tail decreases what it finds.[12] That rule belongs to a specific traditional technique rather than the modern language of growth direction and familiar capacity.

Continue to the North Node guide to browse its sign and house lessons.

This table shows the North Node sign and opposite South Node sign for every birth date from 1930 through 2026. Every table date refers to noon UTC. It uses the true node ranges through the latest sampled date. Boundary notes identify short runs when the true and mean nodes occupy different signs. A birth year provides a useful bracket because the node usually spends about eighteen months in one sign. People born within that interval share the nodal sign, while their degrees continue to change from day to day.

The calculator above adds the exact degree for your birth date. A recorded birth time and place also add the house, which can change within a day. Use the table to locate a sign range, then use the calculator when you need the degree, house, ruler, or a true and mean comparison near a boundary.

As of October 18, 2026, the North Node is in Aquarius.

The true node is sampled through September 3, 2026. After that date, the generated ranges assume the mean node.

Next sign changes

These dates use the mean node.

• March 7, 2028: North Node enters Capricorn (mean node)
• September 25, 2029: North Node enters Sagittarius (mean node)

Astrologers use both calculations. Spiller uses the true node and gives the maximum separation as 1 degree 45 minutes.[3] Teal notes that most descriptive node literature rests on mean positions.[5] Separately, she prefers the mean node for natal and progression work because of its steady retrograde motion.[5] Reinhart also uses the mean node in her regular practice, though she checks both near a sign boundary and for detailed timing.[11] Marilyn Muir reports useful results with both and provisionally prefers the true node.[13] Their disagreement concerns method and lineage rather than two different lunar axes.

We lead with the true node and show the mean node beside it. The true position is the Moon's osculating orbital node from the DE440s ephemeris through ANISE, referred to the true equinox of date. In plain words, it follows the changing orbital plane at the date being calculated. The mean node smooths those variations with a linear formula: longitude 125.04452 degrees minus 1934.136261 times the Julian centuries from J2000. It therefore moves backward at a constant average rate.

Avelar and Ribeiro describe the true node's fluctuating motion and the mean node's regular retrograde motion. They state that the difference is never greater than two degrees.[1] The two positions can differ by up to about two degrees. In the generated daily ranges, 62 disagreement runs cover 1,163 days. Those runs cluster around sign boundaries, where a small longitude difference can change the sign shown.

The sign describes the qualities under development; the house locates the area of life where you practice them. Spiller considers the house at least as important as the sign. In her method, the sign names a psychological shift and the house names the experiences through which that shift becomes available.[3] Muir calls houses personal arenas of experience and describes them as approximate two-hour segments of daily time, while one nodal sign spans about a year and a half.[13]

Teal also reads the nodal houses as the practical fields of the axis. Her North Node house shows where new faculties receive conscious effort, while her South Node house contains developed ability and the risk of relying on it too heavily.[5]Liz Greene warns against isolating either house. Since the nodes stay opposite, she reads the paired houses as one polarity that can show conflict or complement, with a workable balance as the aim.[9] An accurate house requires a recorded birth time and place.

• 1. Build identity through visible self direction[4][5][8][3]
• 2. Develop personal values and material independence[4][5][3]
• 3. Practice listening through local exchange[4][5][3]
• 4. Build inner safety through home and roots[5][3]
• 5. Create and take personal risks[5][3]
• 6. Bring practical order to daily service[4][5][3]
• 7. Learn cooperation through chosen partnership[4][5][3]
• 8. Share resources through committed trust[4][5][3]
• 9. Pursue wider meaning through study[5][3]
• 10. Accept public responsibility for chosen goals[5][3]
• 11. Contribute through friendship and shared causes[5][3]
• 12. Develop intuition through contemplative practice[5][3]

The nodal ruler is the planet that rules the sign containing a node. Teal reads the North Node ruler's sign, house, and condition as a second layer of the developmental direction. She uses the South Node ruler for developed aptitudes and the place where familiar material gets worked out.[5]Reinhart also examines the North Node ruler's house, sign, aspects, and general condition for the form that help may take.[11]

Green gives the rulers a more formal place in his method. The South Node ruler describes how the prior mode operated, and the North Node ruler describes how the current mode can be developed.[8]The calculator uses traditional sign rulers. Mars rules Scorpio, Saturn rules Aquarius, and Jupiter rules Pisces. For reference, modern rulers assign Pluto to Scorpio and Uranus to Aquarius; Neptune is assigned to Pisces. Read the ruler after the node's sign and house so it adds detail to an established axis.

Using the 18.6-year nodal circuit[2], the calculator places returns around ages 18 to 19, 37 to 38, and 55 to 56. Doser rounds the circuit to 18.5 years.[14]A return brings the transiting axis back to its natal signs and degrees. The exact date varies with the natal degree and with the node frame used. Townley's multiples of nineteen years describe synastry timing between two people's nodes rather than an individual nodal return delineation.[15] The nodal return calculator calculates those dates from your birth details.

Reinhart separates the full nodal cycle from planets transiting the natal nodes. She reads North Node contacts as periods of challenge and possible change, while South Node contacts can reopen unfinished material. Since one axis is involved, activity at either end can call for attention to the opposite house as well.[11] Doser gives a similar past and development distinction for transits, though his language is more predictive.[14]

Eclipses require a New Moon or Full Moon near the nodal axis. Avelar and Ribeiro explain that the alignment permits one light to be obscured.[1] Reinhart describes two eclipse seasons each year as the Sun reaches each end of the axis.[11]The eclipses in your chart calculator places those eclipse degrees against your natal chart.

Start with the sign and degree on the result card. The sign identifies the nodal axis reading, and the degree gives the precise point within that sign. Read the South Node at the same degree in the opposite sign. Spiller treats both ends as one integrated axis, so compare the familiar response with the quality you are practicing.[3]

A recorded birth time adds the house. That house places the North Node direction in a particular area of life, while the opposite house places the South Node material. Spiller gives sign and house equal weight in her own practice.[3] The ruler callout then names the planet governing the North Node sign and directs you to locate it in your chart. Teal and Green both use that ruler to explain how the North Node direction can operate.[5][8]

When a true versus mean flag appears, the two calculations have crossed a sign boundary on different dates. Read both positions, check which method your preferred author uses, and keep the selected frame consistent when comparing charts or timing a return.

The calculator receives node positions from the Rust engine. The true node is the Moon's osculating orbital node from the JPL DE440s ephemeris through ANISE. Longitudes use the tropical zodiac referred to the true equinox of date. The mean node uses longitude 125.04452 degrees minus 1934.136261 degrees times the Julian centuries from J2000.

When birth time is unknown, noon stands in for the missing time. The slow nodal motion means the sign usually holds, although a boundary date still deserves a true and mean comparison. A house does not hold without a recorded time because the angles move through the zodiac during the day. With a known time and place, the calculator uses whole sign houses. The South Node is derived as the North Node longitude plus 180 degrees.