Astrology Methodology

The Rising uses birth date, birth time, birth place, geographic coordinates, and time-zone-aware chart calculations to determine the rising sign. Here is exactly how it works.

The three required inputs

1. Birth date — exact date: day, month, year
2. Birth time — exact time to the minute. The ascendant moves approximately one degree every four minutes.
3. Birth place — city or coordinates (latitude and longitude)

House system

We use the Placidus house system — the most widely used system in modern Western astrology.

Zodiac system

We use the tropical zodiac, which aligns the start of Aries with the March equinox.

Step-by-step calculation guide →

Calculate your rising sign →