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Neptune Sign Calculator

Your Neptune sign is the dream your whole generation was born into. Neptune crawls through a sign for about fourteen years, so your birth date is all you need. No birth time, no birth place, no sign-up. You get your sign, its exact degree, whether Neptune was retrograde on the day you were born, and the dated timeline of your own Neptune cycle.

When were you born?

Free · no account · birth date only. Time and place do not change Neptune's sign.

Where Neptune is now, August 2026

Neptune is in Aries, in that sign since January 26, 2026; it hands off to Taurus for good on March 23, 2039. It is currently retrograde: it stationed at 4°25′ Aries on July 7, 2026 and turns direct on December 12, 2026. Anyone born today gets Neptune in Aries: the same sign as every baby born in this roughly fourteen-year window.

Why your birth date is all Neptune needs

The fast parts of a chart, the Moon and the Ascendant, genuinely need a birth time and city. Neptune is the opposite case. It takes 164.8 years to circle the zodiac, spends thirteen to fourteen years in each sign, and moves at most about 0.04° a day. Whether you were born at 12:01 am in Tokyo or 11:59 pm in Los Angeles, Neptune sat in the same sign to within a hundredth of a degree. Asking for more than a date is precision theater.

The one real exception: births on an actual ingress day, which happen a few times per decade. On those dates this calculator names both candidate signs instead of silently picking one, and your birth time settles it.

The retrograde trap in "Neptune sign by year" tables

Neptune retrogrades for about five months every year, and because it enters a new sign at a crawl, that backward loop almost always carries it back across the boundary it just crossed. Nearly every Neptune stay therefore opens with an enter → retreat → re-enter shuffle, and year-per-row tables flatten it. The casualties are whole birth-years: Neptune entered Aquarius on January 28, 1998, slipped back into Capricorn from August 22 to November 26, 1998, then re-entered for good on November 27, so a 1998 birthday can be either sign. The same three-way split hits 1984 (Sagittarius–Capricorn), 2011–12 (Aquarius–Pisces) and 2025–26 (Pisces–Aries). At least one widely-read site prints the Aquarius era as ending in 2011 when Neptune did not leave it for good until February 3, 2012.

This calculator runs on an ingress table that keeps every retrograde re-entry from 1861 to 2052 as its own dated row, computed with an independent ephemeris and verified segment by segment against published ingress tables. Prefer to browse? The Neptune sign guide prints the whole table, and matches each era to the generation born under it.

Everyone your age shares the sign, so what's personal?

Three things, and this page prints two of them. The degree: a 1985 Neptune at 1° Capricorn and a 1997 Neptune at 29° Capricorn are the same sign but sit twenty-eight degrees apart, which decides which of your own planets Neptune touches, and which transits hit it when. Then the retrograde status. About 43% of people are born with Neptune retrograde, read by most astrologers as a more inward, private expression of the same placement. And the house, the only one that needs a birth time, is where the generational dream lands in your life. That one is what the free birth chart calculator and the ZodiScope app compute.

Neptune in every sign

Each guide dates the era to the day, retreats included, names the generation born under it, and keeps the cohort reading apart from the personal one:

FAQ

Do I need my birth time or place to find my Neptune sign?

No. The date alone settles it on all but a few days per decade. Neptune spends roughly thirteen to fourteen years in each sign and never moves faster than about two and a half arc-minutes a day, so the sign at midnight and the sign at 11:59 pm are identical unless you were born on an actual ingress day. On those days this calculator shows you both candidate signs instead of guessing. What a birth time does change is Neptune's house, which is where the placement turns personal. Your free ZodiScope chart computes that.

Why does everyone my age have the same Neptune sign?

Because Neptune is a generational planet: its 164.8-year orbit parks it in one sign for about fourteen years, so an entire birth cohort shares the placement. That is why astrologers read the Neptune sign as a generation's collective dream, and why what makes your Neptune personal is everything else this calculator prints: its exact degree, whether it was retrograde, the house it falls in (birth time needed), and the aspects it makes to your Sun, Moon and personal planets. The sign is the era you were born into; the degree, house and aspects are how you carry it.

Was Neptune retrograde when I was born, and does it matter?

Neptune stations retrograde and direct once each a year, currently around early July and early-to-mid December. Those dates drift about two days later every year, so a 1960s birth saw stations in February and July. Neptune is retrograde for roughly five months out of twelve, which by our count is about 43% of all days between 1900 and 2025, and that makes a retrograde natal Neptune common rather than special. This calculator checks your date against the exact station days (not a year-by-year guess) and tells you which phase you were born in. Most astrologers read a retrograde Neptune as a more inward, private version of the same placement, not a weaker one.

What is the Neptune square and when does it happen?

Nobody lives to a Neptune return. The planet takes almost 165 years to lap the zodiac, so the big Neptune-to-Neptune transits are the fractions: a sextile around age 27–28, the square around 41–42, a trine around 55, and the opposition around 82. The square is the one astrologers flag, because it lands in the same years as the Uranus opposition and Saturn's second-return build-up: the classic midlife question of which dreams were real. This calculator dates your passes exactly, including the retrograde double- and triple-hits that make each one a season rather than a day.

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