A Planet Crossing Into a New Sign
An ingress is the exact moment a planet crosses from one zodiac sign into the next. Every planet has ingresses — Mercury and Venus ingress frequently due to their speed; Saturn and Jupiter ingress every two-plus years. The most symbolically powerful ingresses are solar: the Sun entering Aries (vernal equinox), Cancer (summer solstice), Libra (autumnal equinox), and Capricorn (winter solstice). These four solar ingresses are the seasonal anchors of the tropical zodiac.
Key Ingresses by Planet
| Planet | Approximate Ingress Frequency | Significance |
|---|---|---|
| Moon | Every 2.5 days | Mood and daily timing |
| Sun | Every ~30 days | Seasonal and monthly themes |
| Jupiter | Every ~12 months | Annual expansion theme |
| Saturn | Every ~2.5 years | Multi-year structural theme |
| Pluto | Every ~12–31 years | Generational transformation |
Aries Ingress in Mundane Astrology
In mundane astrology, the Aries ingress chart — drawn for the moment the Sun enters 0° Aries — is cast for the capital city of each country and read as a forecast for that nation's year ahead. The Ascendant of the ingress chart, and which planets are angular, indicate the primary forces at work nationally. This technique, used since Hellenistic times, remains one of the most reliable mundane prediction methods alongside eclipse charts.