Moon Nodes Calculator
Calculate the position of the Moon's nodes (North Node and South Node) for a given date. The nodes are the points where the Moon's orbit crosses the ecliptic, important in astrology and astronomy.
Published by:
isCalculator Editorial Team
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How to use this tool?
Follow these steps to calculate the Moon's Nodes for any date:
- Select a date using the date picker field (default is January 1, 2025).
- Click the "Calculate Nodes" button.
- View the results:
- North Node (Rahu) – the ecliptic longitude where the Moon crosses from south to north.
- South Node (Ketu) – always exactly 180° opposite the North Node.
- Results are displayed in degrees, minutes, and seconds (e.g., 45° 30' 15").
Note: The calculator uses astronomical algorithms based on the Julian Day. No special input format is required—just pick a date. If an invalid date is entered, an error message will appear.
Previous Results
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Frequently Asked Questions
The Moon's nodes are the two points where the Moon's orbit crosses the ecliptic (the apparent path of the Sun). The North Node (Rahu) is where the Moon crosses from south to north, and the South Node (Ketu) is the opposite point.
The North and South Nodes are always 180° apart because they are the intersection points of the Moon's orbit with the ecliptic; the line connecting them passes through the center of the Earth.
This calculator uses a simplified mean node formula, which gives approximate positions. For precise astrological calculations, consider using professional ephemeris software.