Jupiter Square Jupiter: Competing Growth Aims in the 12-Year Cycle

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Jupiter square Jupiter is the transit in which Jupiter in the sky stands 90° from your natal Jupiter. Jupiter takes about twelve years to go round the Sun (NASA's figure is about 12 Earth years), so the squares come round often: a waxing square roughly three years after each Jupiter return and a waning square roughly three years before the next one. "Three, six, nine" is a handy way to picture the cycle, but it is orientation, not a timetable. Your dates come from your natal Jupiter degree and from Jupiter's yearly retrograde loops.

Astrologers tend to read the squares as moments when two growth aims compete for the same time, money or attention, and the scale of a plan needs adjusting. That is a theme to think with. It is not a forecast, it does not mean luck runs out, and it does not show that anyone has overreached.

Educational guide: Astrologist.com has no transit calculator, and it provides no return chart, transit calendar or automated timing report either. Its free birth chart is a birth chart, nothing more. The dated example below was computed offline for this page alone. To date your own squares, line up natal Jupiter against a Tropical ephemeris.

Where the squares sit in the cycle

Write natal Jupiter as one number, its distance in degrees from 0° Aries. Plus 90° gives the waxing square point and plus 270° (equivalently minus 90°) gives the waning one; go round past 360° as needed. In between lies the opposition point at plus 180°, which has its own page, Jupiter opposition Jupiter. The order through one cycle is return, waxing square, opposition, waning square, return.

The labels describe phase only: "waxing" for the half before the opposition, "waning" for the half after it. Applying and separating is a different idea, and the site's calculator does not track it. If one square is exact three times because of a retrograde loop, those three dates are a single square, not three.

Three, six, nine is not a schedule

About once every thirteen months Jupiter appears to reverse for roughly four months. The placement of those reversals, together with Jupiter's changing pace, nudges every date. Using the site's Jupiter code offline on a set of 152 births (10 February and 10 August of each year 1921 to 1996, noon UT), the first exact waxing square fell between ages 2.4 and 3.2 and the first exact waning square between 8.1 and 9.5. In that sample 114 of the 152 waxing squares and 107 of the 152 waning squares were exact once; all the others were exact three times.

Those first squares fall in early childhood. They are included here as arithmetic only. This page does not treat them as developmental stages or as a comment on anyone's upbringing, and the example below uses an adult cycle instead.

Worked example: one adult cycle

The person is fictional. Jupiter's positions were produced by running the free chart's planetary code offline, once, for this article.

• Birth: 5 March 1992, 09:40, Utrecht. Dutch winter time (UT+1) applied, so the birth was at 08:40 UT.
• Natal Jupiter: 8°58' Virgo (158.98°), retrograde.
• Model: VSOP87B, read through the astronomia package exactly as the site does, giving Jupiter's apparent position from Earth in Tropical longitude (equinox of date).
• Search window: 5 March 2015 to 5 March 2029, between ages 23 and 37. Positions were taken four times a day, every crossing was narrowed by repeated halving to under half a minute (a numerical step, not a claim that the sky is known that precisely), and every turning point was fixed to around a minute and checked against each target and the 8° band limits. UT throughout, whole days; anything after October 2026 is a forward calculation.
• Cycle reference: the exact return of 22 September 2015. It was exact once, so there is no ambiguity about which pass starts the count.

Equal quarters of this cycle would put the squares at 2.99 and 8.97 years after the return. The waxing square came a quarter of a year later than that and the waning square two months earlier. Every step in this cycle was exact once, which is common but not guaranteed; the opposition page shows a three-pass case.

Band stretches can split around one hit

The 8° allowed for a natal square is reused here just to illustrate. It is not an orb Astrologist.com applies to transits, and a band of dates, like the exact date, is no gauge of how long or how strongly a person experiences a transit.

Even with one exact hit, the band can come in pieces. Around the waxing square Jupiter was within 8° from 12 November 2018 to 27 January 2019 and then again from 1 July to 21 September 2019, when a retrograde loop carried it back; it turned direct on 11 August 2019 at 14°30' Sagittarius, more than 5° past the point, so there was no second exact hit. Around the waning square the two stretches were 30 May to 16 August 2024 and 2 December 2024 to 7 April 2025, with the turning point of 4 February 2025 at 11°16' Gemini, 2.3° past the point.

No birth time?

Without a time the free chart calculates at local noon. That noon is only a reference for the arithmetic; the site never presents it as when you were born, and it shows no spread of positions over the day. Here the noon value (11:00 UT) is also 8°58' Virgo. Across the whole local date in Utrecht (23:00 UT on 4 March to 22:59 UT on 5 March) natal Jupiter ran backward from 9°02' to 8°54' Virgo, with no station within a month. Rerunning with natal values ten minutes apart across that date, and at either end of it, still gave one hit per step, each within a day of the dates above; the band limits shifted by about a day.

The rounding of the displayed degree matters too. Using the chart's whole-minute value, 8°58', instead of the full value moves the 2015 return to 21 September and the 2018 square to 18 December, because both crossings sit close to midnight UT. Jupiter moves fast enough that a few arc-minutes can change the calendar date, so treat these dates as good to about a day. Do not take houses or an Ascendant from a guessed time.

Interpreting the squares

Natal Jupiter's sign, its house (only with a known birth time) and its aspects shape the reading. Treat what follows as possibilities.

• Waxing square. Often described as the point where something started around the return meets a second claim on the same resources: a course that collides with a job, an expanding project that crowds out another. The question is usually one of scale and priority.
• Waning square. Often read as trimming: deciding which of the cycle's expansions to keep at full size before the next return, and which to scale back.

Neither square guarantees gain or loss, says anything about money or legal matters, or proves recklessness. Saturn's squares run on a separate, slower clock; if you want to compare the two, calculate each separately and keep their meanings apart (see Saturn square Saturn). For Jupiter's passage through your houses, a different measurement, see Jupiter transits through the houses.

Dating your own squares

1. Find natal Jupiter in the free birth chart and note its degree and sign.
2. Calculate natal + 90° and natal + 270°.
3. Work through a Tropical ephemeris for each day Jupiter lands on either point, watching every station nearby in case a loop adds two more passes or halts just before the point.
4. Keep to whole days and note the time standard your ephemeris uses.

No date cut-off applies to Jupiter in the free chart. The code repository checks Jupiter against the Swiss Ephemeris over 1920 to 2060, and all of this example's dates are in that range; for years outside it, use a single outside ephemeris for natal and moving Jupiter alike (apparent, Earth-centred, Tropical, one time standard). See transits without a transit tool for the full method. Ask the Astrologist can discuss natal Jupiter with you, but bring transit dates from your own ephemeris; the chat does not work them out.

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• Jupiter Opposition Jupiter
• Jupiter Return
• Uranus Square Uranus
• Social Planets
• What Your Jupiter Sign Means
• Aspect Orbs Explained