Zodiac Sign Calculator

Zodiac Sign is evaluated from Date of Birth. The calculation reports Zodiac Sign, Date Range and Element.

Results

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About the Zodiac Sign Calculator

Zodiac Sign is treated here as a quantitative relation between Date of Birth and Zodiac Sign, Date Range, Element and Symbol.

The calculator uses a multi formula configuration. Each reported value is read as a direct evaluation of the stored rules with the declared field formats and units.

Formula basis:
Compare birth month and day against the date ranges for each of the 12 zodiac signs. Return the matching sign name, date range, element (Fire/Earth/Air/Water), symbol, and ruling planet.

Interpret the outputs in the order shown by the result fields. Optional inputs affect only the outputs that depend on those variables.

Formula & How It Works

The calculation applies the following relations exactly as recorded in the metadata:

Compare birth month and day against the date ranges for each of the 12 zodiac signs. Return the matching sign name, date range, element (Fire/Earth/Air/Water), symbol, and ruling planet.

Each output field is produced by substituting the supplied inputs into the relevant relation and then applying the declared rounding or text format.

Worked Examples

Example 1: Birthday: July 4, 1990

Inputs

birth_date: 1990-07-04
Zodiac Sign: Cancer. Date Range: Jun 21 - Jul 22. Element: Water. Symbol: Crab. Ruling Planet: Moon

With Date of Birth = 1990-07-04 as the stated inputs, the result is Zodiac Sign = Cancer, Date Range = Jun 21 - Jul 22 and Element = Water. Each value corresponds to the declared output fields.

Example 2: Birthday: January 20, 2000

Inputs

birth_date: 2000-01-20
Zodiac Sign: Aquarius. Date Range: Jan 20 - Feb 18. Element: Air. Symbol: Water Bearer. Ruling Planet: Uranus / Saturn

With Date of Birth = 2000-01-20 as the stated inputs, the result is Zodiac Sign = Aquarius, Date Range = Jan 20 - Feb 18 and Element = Air. Each value corresponds to the declared output fields.

Example 3: Birthday: March 21, 1985

Inputs

birth_date: 1985-03-21
Zodiac Sign: Aries. Date Range: Mar 21 - Apr 19. Element: Fire. Symbol: Ram. Ruling Planet: Mars

With Date of Birth = 1985-03-21 as the stated inputs, the result is Zodiac Sign = Aries, Date Range = Mar 21 - Apr 19 and Element = Fire. Each value corresponds to the declared output fields.

Example 4: Birthday: December 22, 1978

Inputs

birth_date: 1978-12-22
Zodiac Sign: Capricorn. Date Range: Dec 22 - Jan 19. Element: Earth. Symbol: Sea-Goat. Ruling Planet: Saturn / Uranus

With Date of Birth = 1978-12-22 as the stated inputs, the result is Zodiac Sign = Capricorn, Date Range = Dec 22 - Jan 19 and Element = Earth. Each value corresponds to the declared output fields.

Common Use Cases

  • Determine your Western zodiac sun sign from your birth date
  • Find a friend's zodiac sign for compatibility checking
  • Look up zodiac sign date ranges for educational purposes