Horoscope

Vertex Sign Calculator

Calculate your exact Vertex position in the birth chart using astronomical formulas - no external APIs required.

Use 24-hour format (e.g., 13:30 for 1:30 PM)
Decimal degrees (N positive, S negative)
Decimal degrees (E positive, W negative)

Your Vertex Calculation

Vertex Position

House Position

Calculation Details

How This Vertex Calculator Works

This calculator uses pure mathematical calculations without relying on external APIs:

  1. Julian Date Calculation: Converts your birth date/time to Julian date for astronomical calculations
  2. Local Sidereal Time: Computes the sidereal time for your birth location
  3. House Cusp Calculation: Determines house positions based on your chosen house system
  4. Vertex Formula: Calculates the Vertex point using the intersection of the ecliptic and prime vertical
  5. Zodiac Position: Converts the Vertex's ecliptic longitude to zodiac sign and degree

The calculations are based on standard astronomical formulas used in astrology software.

Quote of the Day They must often change who would be constant in happiness or wisdom. — Confucius
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