Last updated 26 August 2026
How the date ranges work
The Western zodiac assigns twelve signs to twelve date ranges across the year, based on where the sun traditionally sits relative to each constellation. Because that position drifts slightly year to year, different sources round the boundary dates a little differently — this tool uses the commonly cited ranges, which is the version most horoscopes and sites use.
Common questions
Why do zodiac sign date ranges vary slightly between sites?
The sun's position relative to each constellation shifts slightly year to year, so different sources round the boundary dates a little differently. This tool uses the commonly cited Western tropical zodiac ranges, which is the most widely used version.
What if my birthday falls right on a boundary date?
You're assigned whichever sign's range that exact date falls into by this tool's ranges — boundary dates are exact cutoffs here, not a blend of the two neighboring signs.
Is this based on astronomy or astrology?
Astrology — the traditional Western zodiac used in horoscopes, based on a calendar convention rather than the sun's precise current astronomical position, which has actually drifted from these date ranges over the centuries.