Zodiac sign by date of birth
Your zodiac sign by date of birth is the same in every year for 349 of the 366 dates. For the other 17 it depends on the year you were born — and on 24 more dates, only the hour of birth can change it.
The reason fixed zodiac tables are wrong
These 17 dates are genuinely in dispute
Most sites print something like “Leo: July 23 – August 22”. But a tropical year is 365.2422 days, so the Sun reaches the start of a sign about six hours later each year until a leap day pulls it back — and over a century that sawtooth drifts as well. A fixed table is right in some birth years and wrong in others for every date below.
- One year’s entry
- 2026
- Noon UTC
Each tick is one year’s entry. Where the ticks fall on both sides of a date’s noon line, that date’s sign at noon depends on the year. The widest spread belongs to Leo, 37 h 27 min from first to last; the narrowest to Aquarius, 35 h 6 min.
Capricorn → Aquarius
Aquarius → Pisces
Pisces → Aries
Aries → Taurus
Taurus → Gemini
Gemini → Cancer
Cancer → Leo
Leo → Virgo
Virgo → Libra
Libra → Scorpio
Scorpio → Sagittarius
Sagittarius → Capricorn
18 pages · printable
The 2027 Sky Calendar — free PDF
Every retrograde, eclipse, new and full moon of 2027 to the minute, already converted to your city. A month to a page, ready to print.
Every date in the year
Boundary dates are outlined. The rest give the same sign at noon in every year from 1930 to 2029.
January
February
March
April
May
June
July
August
September
October
November
December
What each date page gives you
- On a boundary date — which sign each birth year gets, and the minute the Sun crossed whenever the crossing landed inside that day. A table cannot answer “am I Cancer or Leo” for these dates; the year can.
- On a settled date — the Sun’s degree, which of the three decans the date falls in, and that decan’s sub-ruler: the layer that separates two people born three weeks apart under the same sign.
- On every date — how many US babies are born on it a day, and the spread of life path numbers that day and month produce over a century. Only the year varies, so some dates can yield a master number and some never do.
Why the century figures differ from date to date
Each date page counts, for noon UTC in every year from 1930 to 2029, how often Mercury was retrograde and which phase the Moon was in. Two cycles make those counts specific to the date:
- The Moon comes back to the same phase on the same calendar date only about every 19 years (the Metonic cycle), so a century holds five or six repeats, and each date collects a different mix of phases and full moons.
- Mercury turns retrograde three times a year for about three weeks each, and the whole pattern arrives some 18 days earlier every year. Any given date is retrograde in roughly a fifth of years, never in exactly the same ones. Mercury retrograde dates →
Questions about zodiac signs by birth date
How do I find my zodiac sign from my date of birth?
Pick your date in the calendar on this page. For 349 dates the sign at noon is the same in every year; for the other 17 it depends on the year you were born, because the Sun does not cross into a new sign at the same moment every year. Those pages give the crossing time for each year.
Why do sites disagree about my zodiac sign?
Most publish a fixed date range, and a fixed range is wrong in some years. Between 1930 and 2029 the Sun entered Leo anywhere from 22 to July 23, depending on the year. Born on a boundary date, you can find a table that is right for your birth year and another that is wrong.
What is a cusp sign?
The word people use for a birthday within a day or so of a sign change. There is no third sign — at the moment of birth the Sun is on one side of the boundary or the other, and that can be calculated. What is true is that the answer depends on the birth year and sometimes on the hour.
Cite this page
AstroHot. “Zodiac Sign by Date of Birth: 366 Dates, 17 Disputed.” Accessed November 1, 2026. https://astrohot.com/birthday/
For Wikipedia
{{cite web |title=Zodiac Sign by Date of Birth: 366 Dates, 17 Disputed |url=https://astrohot.com/birthday/ |website=AstroHot |access-date=2026-11-01}}