Which zodiac system does this use?

The Western tropical zodiac, the twelve-sign system most common in newspaper horoscopes and everyday use, with fixed calendar date ranges rather than the shifting star-based boundaries of sidereal astrology.

What date formats are accepted?

Either a full date as "YYYY-MM-DD" (e.g. "1990-07-15") or just the month and day as "MM-DD" (e.g. "07-15"), since the zodiac sign never depends on the year.

What happens on a boundary day, like December 22?

It resolves to whichever sign's published range includes that exact date. December 22 falls at the very start of Capricorn's range, so it returns Capricorn. These cutoffs are the same ones almost every horoscope column uses, though a handful of publications shift them by a day.

Does this account for leap years?

Yes. February 29 is accepted as a valid date and falls within Pisces' range, alongside every other February date.

Zodiac Sign Finder - Find a Western Zodiac Sign by Birth Date

Overview

Introduction

Looking up a zodiac sign by hand means remembering twelve overlapping date ranges, which is easy to get wrong right at the boundaries.

This tool takes a birth date and returns the matching Western tropical zodiac sign instantly, using the same fixed ranges published in most horoscope columns.

What Is Find a Zodiac Sign by Date?

A date-to-zodiac-sign lookup tool covering all twelve signs of the Western tropical zodiac, from Aries through Pisces.

It accepts either a full date or just a month and day, since a zodiac sign depends only on where a birthday falls in the calendar year, never on the year itself.

How Find a Zodiac Sign by Date Works

The input is parsed as either "YYYY-MM-DD" or "MM-DD" and validated against the actual number of days in that month.

The resulting month and day are checked against twelve fixed date ranges, one per sign, and the matching sign's name is returned.

When To Use Find a Zodiac Sign by Date

Use it to quickly check a zodiac sign from a birth date, without memorizing or looking up the date ranges.

It's also useful for batch-checking many dates by re-running the tool, or as a building block in a larger form that needs a sign derived from a date field.

Often used alongside Print Dates of All Zodiac Signs.

Features

Advantages

Covers every calendar day with the standard published date ranges, including boundary days.
Accepts a bare month-day input, so no placeholder year is needed for someone who'd rather not enter a birth year.
Instant, deterministic result with no external lookup or network call.

Limitations

Only covers the Western tropical zodiac; it does not compute sidereal (Vedic) zodiac signs, which use different, slowly shifting date boundaries.
A small number of publications place sign boundaries a day earlier or later than the ranges used here.

Examples

A mid-July birth date

Input

1990-07-15

Output

Cancer

July 15 falls within Cancer's range of June 21 to July 22.

A boundary date without a year

Input

12-22

Output

Capricorn

December 22 is the first day of Capricorn's range, which runs December 22 to January 19.

Best Practices & Notes

Best Practices

Use the "MM-DD" form when the birth year doesn't matter, to avoid entering an arbitrary placeholder year.
Double-check results for dates right on a sign boundary against your source of truth if you need to match a specific publication's cutoffs exactly.

Developer Notes

Each sign is stored as a { startMonth, startDay, endMonth, endDay } range, and a match is found by checking whether the parsed month equals the range's start month with a day on or after startDay, or equals the end month with a day on or before endDay. Because every one of these twelve ranges spans exactly two adjacent calendar months (including Capricorn's December-to-January wraparound), this single two-branch check correctly resolves all twelve signs without any special-cased wraparound logic.

Find a Zodiac Sign by Date Use Cases

Quickly checking a friend or family member's zodiac sign from their birthday
Populating a zodiac-sign field in a horoscope or personality-quiz app from a date-of-birth input
Verifying the date ranges used by a horoscope column against the standard tropical zodiac

Common Mistakes

Entering a day that doesn't exist in the given month (like "02-30"), which the tool rejects rather than silently rolling over into March.
Assuming this matches sidereal zodiac results, which use different date ranges and will disagree with this tool for many birth dates.

Tips

Use Print Dates of All Zodiac Signs alongside this tool to see every sign's full range at a glance.
If you only remember a birthday's month and day, skip the year entirely, the "MM-DD" form works just as well.

Find a Zodiac Sign by Date