Lunar Standstill Calculator
The Moon’s declination envelope oscillates on an 18.6-year nodal cycle. At a major standstill the Moon reaches approximately ±28.7°, well outside the Sun’s own ±23°26’ envelope. At the minor standstill 9.3 years later it shrinks to ±18.3°. Between those two extremes the Moon slides in and out of bounds monthly. This calculator shows every major and minor peak from 1900 to 2100 and locates any birth date in the cycle.
Current cycle
Most recent
Major standstill
December 22, 2024 · ±28.7°
Upcoming
Minor standstill
July 6, 2033 · ±18.3°
Your birth standstill
Enter your birth date to see which phase of the 18.6-year envelope your birth Moon falls into. This is not a full natal computation; it locates your birth year within the nodal cycle.
Standstill timeline, 1900-2100
| Year | Peak date | Kind | Peak |declination| |
|---|---|---|---|
| 1913 | September 1, 1913 | Major | ±28.7° |
| 1922 | April 15, 1922 | Minor | ±18.3° |
| 1932 | February 28, 1932 | Major | ±28.7° |
| 1941 | March 30, 1941 | Minor | ±18.3° |
| 1950 | August 29, 1950 | Major | ±28.7° |
| 1959 | November 14, 1959 | Minor | ±18.3° |
| 1969 | April 11, 1969 | Major | ±28.7° |
| 1978 | September 26, 1978 | Minor | ±18.3° |
| 1987 | September 15, 1987 | Major | ±28.7° |
| 1997 | February 12, 1997 | Minor | ±18.3° |
| 2006 | September 15, 2006 | Major | ±28.7° |
| 2015 | October 24, 2015 | Minor | ±18.3° |
| 2024 | December 22, 2024 | Major | ±28.7° |
| 2033 | July 6, 2033 | Minor | ±18.3° |
| 2043 | April 19, 2043 | Major | ±28.7° |
| 2052 | May 4, 2052 | Minor | ±18.3° |
| 2061 | October 24, 2061 | Major | ±28.7° |
| 2070 | December 6, 2070 | Minor | ±18.3° |
| 2080 | May 14, 2080 | Major | ±28.7° |
| 2089 | November 16, 2089 | Minor | ±18.3° |
| 2098 | November 4, 2098 | Major | ±28.7° |
Track every moon standstill against your natal chart
Create a free account to see how each major and minor standstill activates your natal moon, nodes, and personal planets.
What is a lunar standstill?
The Moon’s orbital plane is tilted 5.14° relative to the ecliptic. The intersection of those two planes (the lunar nodes) slowly precesses westward around the zodiac, completing a full revolution every 18.61 years. Because the ecliptic itself is tilted 23.4° relative to the celestial equator, the Moon’s maximum declination varies between 23.4° + 5.14° ≈ 28.54° when the nodes align with the equinoxes (major standstill), and 23.4° − 5.14° ≈ 18.26° when they align with the solstice points (minor standstill).
Archaeoastronomers have traced major standstill alignments in some Neolithic and Bronze Age monument studies, including Callanish on the Isle of Lewis where the Moon appears low along the southern horizon near major standstill, and at Chimney Rock in Colorado where the major standstill alignment frames a visible axis between two rock pillars. English Heritage describes Stonehenge’s Station Stones as sharing an orientation with the southernmost moonrise at major standstill, while also noting that researchers still debate intentionality.
Major vs minor standstills
A major standstill is the half of the cycle when the Moon can reach past the Sun’s own envelope. A person born during that part of the cycle may have a Moon that is technically out-of-bounds, but the birth chart still has to be checked directly. The most recent major standstill peaked in late December 2024, and the cycle keeps producing high-declination moons through much of 2025. Historical major standstills include 1913, 1932, 1950, 1969, 1987, 2006, and 2024-2025. The next major standstill after this one peaks around April 2043.
A minor standstill is the opposite half: the Moon’s geocentric declination envelope shrinks and stays inside the solar OOB threshold. The next minor standstill peaks around July 2033. Astrologically, this is safest to read as background lunar context rather than a fixed personality marker.
Modern astrological interpretation
Standstill phases of the 18.6-year cycle provide astronomical background for lunar interpretation. A natal Moon at +24° is OOB regardless of cycle label, while a Moon below the threshold is not OOB even if it was born during a major-standstill era. The cycle explains when such placements are possible, not what they must mean.
The mathematical cycle is well-defined and the peaks are calculable, but cultural or spiritual meanings attached to a standstill are interpretive. Use those meanings only when they are clearly framed as modern practice rather than astronomical fact.
Related Free Tools
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Moon Out-of-Bounds Dates
Every Moon out-of-bounds window from 2015 to 2035. The Moon goes OOB monthly during the major-standstill phase of the 18.6-year cycle.
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Frequently Asked Questions
What is declination in astrology?
Declination is a body's angular distance north or south of the celestial equator, measured in degrees. Unlike zodiac longitude, it is a physical sky coordinate, so it does not depend on house system, tropical vs sidereal zodiac, or any other framing choice. Every chart has both a longitudinal axis and a declination axis.
What does 'out of bounds' mean?
A planet is out of bounds when its absolute declination exceeds the Sun's own maximum of about 23°26' (the obliquity of the ecliptic at J2000). Moon, Mercury, Venus, Mars, and Pluto are the bodies most often given dedicated OOB readings here; Jupiter and Uranus can cross in rarer windows, while Saturn and Neptune generally remain inside the solar envelope in modern tables.
What is a parallel aspect?
Two planets are parallel when they share the same declination within a 1° orb (north-north or south-south). Modern declination practice reads parallels as conjunction-like contacts on a second coordinate, especially when they repeat a zodiacal aspect already present.
What is a contraparallel?
A contraparallel occurs when two planets have equal but opposite declinations (for example +12° and -12°) within a 1° orb. It functions as a declination-axis opposition: the bodies are matched in intensity but poled against each other across the celestial equator.
Why aren't all the planets in the out-of-bounds table?
The calculator checks the supported ephemeris bodies directly. The curated interpretation cards focus on Moon, Mercury, Venus, Mars, and Pluto because those are the common OOB bodies in modern practice. If Jupiter, Uranus, or another supported body is flagged, treat it as a technical OOB condition even when no dedicated interpretation card is available.
Does house system affect declination?
No. Declination is a physical equatorial coordinate. It does not depend on Placidus, Whole Sign, Porphyry, Koch, Campanus, Regiomontanus, or any other house system. This makes declination useful when a birth time is uncertain, because house-dependent signals are the first to degrade under time error and declination is not one of them.
Is a contraparallel the same as an antiscion?
No. A contraparallel matches bodies by declination across the celestial equator. An antiscion matches bodies by ecliptic longitude reflected across the Cancer-Capricorn solstice axis. They often point at the same body pairs but they are computed on different axes and carry slightly different meanings.
How accurate are the declinations on this page?
We compute declinations from the JPL DE440s planetary ephemeris via ANISE. Out-of-bounds status is flagged at the ±23.4393° J2000 threshold; epoch-of-date obliquity drifts by about 0.013° per century from this value, which is well below the resolution of any traditional OOB claim.