Planet Ingress Calculator — Sign Change Dates
An ingress is the exact real moment a planet crosses from one zodiac sign into the next — this tool computes the next ingress date for every planet from today, found by genuinely solving each planet's orbital position day by day rather than reading it off a static lookup table of average sign-change dates.
Outer planets can take a year or more to fully cross one sign, so their ingress dates mark real, comparatively rare turning points — traditionally read as shifts in the collective mood for everyone born in that generation, not just a personal event.
Frequently Asked Questions
What does it mean when a planet 'ingresses' into a new sign?
An ingress is the moment a planet's ecliptic longitude crosses a 30-degree sign boundary — found by scanning each planet's real computed position forward in time, not a published ephemeris table.
How often does the Sun change signs?
Twelve times a year, roughly one ingress per month. Outer planets move far more slowly: Saturn, Uranus, Neptune, and Pluto can each spend years in a single sign.
Can a planet ingress, then go back into the previous sign?
Yes — Mercury, Venus, and Mars ingress often enough that they can cross a sign boundary, turn retrograde and drift back across it, then cross forward again within a short span.
Why do outer-planet ingresses matter more in mundane astrology?
Because Saturn, Uranus, Neptune, and Pluto move so slowly that a sign change is traditionally read as a genuine shift in collective, generational themes lasting years.
Why does my chart's house placement show up next to some ingresses?
Once you've computed your natal chart, this tool reads each upcoming ingress against your own real house cusps — without a computed chart, it still shows every ingress, just without that personal context.