YOUR NODAL AXIS
North Node Calculator
Your birth details
Your result
MEAN NODETwo points. One axis.
Enter your birth details to see your North Node and its opposite South Node.
THE CALCULATION
One clear model.
This north and south node calculator computes the mean ascending lunar node from an astronomical polynomial in your browser. It uses the tropical zodiac. It does not look up a preset birth-date table.
The South Node is exactly 180° opposite the North Node. The mean node smooths the Moon’s orbital motion; a true-node result can differ. Neither label is a claim that one system predicts your life more accurately.
With a birth time, coordinates and UTC offset, the tool calculates the eastern-horizon ascendant and uses Whole Sign houses: the ascendant’s entire sign is house 1. Other house systems can give different houses.
Range and precision
Dates: 1 January 1600 through 31 December 2400, Gregorian calendar. Coordinates: latitude −89.9° to +89.9°, longitude −180° to +180°. UTC offset: −14 to +14 hours. This is an approximate mean-node calculation, displayed to 0.01°. Display resolution is not a guarantee of accuracy.
For a blank birth time, the result spans the local calendar day at your entered UTC offset. If that range crosses a sign boundary, the sign is marked Cannot determine. Houses are not calculated without a time and both coordinates. Close to an ascendant sign boundary, the house is marked Cannot determine. Polar locations may have unusual rising-sign behavior.
The calculation uses a polynomial estimate of the difference between civil and astronomical time. Historical and future dates carry more timing uncertainty. The UTC offset is entered manually; the tool does not look up historical daylight-saving rules.
BEFORE YOU READ YOUR CHART
A few useful answers.
Can I calculate without a birth time?
Yes. Enter your birth date and its UTC offset. You will see a degree range for that day. You will not receive a house or an invented exact birth moment.
Why do two moon nodes calculators disagree?
Check whether each uses the mean or true node, tropical or sidereal zodiac, the same UTC offset, and the same house system. This tool always uses the mean node, tropical zodiac and Whole Sign houses.
What does my result mean?
Use the calculation first, then explore the separate North Node sign guide. For your wider chart, open the natal chart calculator. Astrology is a symbolic interpretation system, not a scientific prediction of your future.
Where do I find my UTC offset?
Use the offset that applied at your birthplace on your birth date, including daylight saving time. A present-day offset may be wrong for a historical birth. If you cannot confirm it, do not treat a boundary sign or house as certain.