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Jupiter Sign Calculator

Your Jupiter sign is where growth — and the luck that follows it — runs in your chart. Finding it takes a single input. Jupiter moves slowly enough that your birth date alone decides it: no time, no place, no sign-up. Plug in your date for your sign, its exact windows, and what it actually means.

When were you born?

Free · no account · birth date only — time and place do not matter for Jupiter.

Why your birth date is all Jupiter needs

Most placement tools demand your birth time and city because the fast-moving parts of a chart — the Moon, the Ascendant — require them. Jupiter does not. It spends about a year in each sign and crawls a few arc-minutes per day, so its sign is identical whether you were born at 12:01 am or 11:59 pm on almost any date in the last century. Demanding more than a birth date is precision theater.

The exception: one or two birthdays a year fall on the exact day Jupiter crosses a boundary. On those dates this calculator flags both candidate signs instead of silently guessing — the same standard the most careful ephemeris tools use.

The retrograde trap most lookup tables fall into

Jupiter retrogrades for about four months every year, often backing across a sign boundary it already passed — so a single sign can host Jupiter in two or three separate windows inside eighteen months. Lazy year-per-row tables flatten those splits and misfile everyone born in a re-entry window. For instance: Jupiter backed into Pisces from October 28 to December 19, 2022, long after standard tables handed the year to Aries.

This calculator runs on a 151-row ingress table covering 1935–2032 that keeps every retrograde re-entry as its own row, cross-checked against Cafe Astrology's tables and an independent Swiss Ephemeris computation. Prefer to browse instead? The Jupiter sign guide prints the same table year by year.

Jupiter in every sign

Every placement has its own growth style — its own luck, and its own fine print. Each guide covers the dates, the dignity, the cohort stories and the failure modes:

FAQ

Do I need my birth time or place for my Jupiter sign?

No — your birth date is enough. Jupiter spends roughly a year in each sign — actual stays run about twelve to thirteen months — and moves only a few arc-minutes per day, so the sign at midnight and the sign at 11:59 pm are the same on all but a handful of days per year. That is why this calculator asks for nothing else. The exception is being born on the exact day Jupiter changed signs, in which case the calculator shows you both candidates instead of guessing.

What if I was born on the day Jupiter changed signs?

Then your Jupiter sign depends on the hour you were born, and a date can't decide it. Rather than silently picking one, this calculator tells you Jupiter was moving between two signs on your birthday and shows both. To resolve it, run your full birth chart with your exact time — the ZodiScope chart is free and computes Jupiter's position to the degree.

Why do some Jupiter sign tables give the wrong answer?

Because Jupiter retrogrades for about four months every year, and in some years that carries it back across a sign boundary it had already crossed. A year-per-row table flattens those re-entries: for example, anyone born between October 28 and December 19, 2022 has Jupiter in Pisces — on the boundary days themselves, birth time decides — even though most tables show 2022 handed to Aries in May. This calculator's table keeps every retrograde re-entry from 1935 to 2032 as its own row, cross-checked against an independent ephemeris computation.

Can my Jupiter sign be the same as my Sun sign?

Yes, with no special geometry required — and this is a real difference from the inner planets. Venus and Mercury orbit close to the Sun, so their signs are always within a couple of signs of your Sun sign. Jupiter has no such leash: it can sit anywhere in the zodiac relative to your Sun, which makes any Sun–Jupiter combination possible and a same-sign pairing roughly a one-in-twelve event. When it happens, the chart reads as a double dose of that sign's growth style.

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