North Node Calculator

Enter your birthday to find your North Node and South Node signs, down to the degree.

Your North Node is the point where the Moon's path crossed the Sun's path, heading north, at the time you were born. Astrologers read its sign as the direction you are meant to grow in. Your South Node is always in the opposite sign. To find both, you only need your date of birth.

How the calculator works

The Moon's orbit is tilted about five degrees against the path the Sun appears to follow through the zodiac. The two paths cross at two points. Where the Moon crosses going north is the North Node; the opposite point is the South Node. Eclipses can only happen when a new or full Moon falls near one of them.

The calculator takes the Moon's position and motion at the moment you were born, works out the plane of its orbit, and finds where that plane cuts the zodiac. We checked the result against orbital data from NASA's Jet Propulsion Laboratory at four dates between 1988 and 2026, and it agreed to within 0.003 degrees each time.

True node and mean node

The Moon's orbit wobbles, so the crossing point does not slide backward at a perfectly even rate. The true node follows the wobble. The mean node smooths it out into steady motion. Between 1930 and 2040 the two are never more than 1.96 degrees apart.

This calculator gives the true node and tells you when the mean node would put you in a different sign. That only happens for birthdays within about 6 weeks of a sign change.

A worked example

Take someone born on June 15, 1995. The true North Node was at 4° Scorpio that day, which puts the South Node at 4° Taurus. The node had entered Scorpio on February 1, 1994 and stayed until July 31, 1995, so everyone born between those dates shares the placement.

The node came back to the same degree on January 13, 2014, when that person was 18. That is a nodal return. The next one falls on August 4, 2032, at age 37.

North Node sign dates, 1930 to 2040

Find the row that contains your birthday. The nodes move backward through the zodiac, so the signs run in reverse order. Dates are for the true node, in Universal Time.

What each North Node sign means

These are the traditional readings. Each one describes a pair, because the South Node always sits in the opposite sign.

Reviewed by Natal Points. Tables and figures on this page were calculated in October 2026.