# AstralMath > Astrology, solved by mathematics. AstralMath answers the decision you actually came with — "am I in my Saturn return?", "is it too late to change careers at 50?" — by computing the astronomy exactly from Swiss Ephemeris, labelling clearly which part is symbolic tradition, and ending on an honest next step. Open-source, in your browser, no sign-up, birth data never leaves the device. ## Key facts (the age-based returns are orbital mechanics, not interpretation) Planetary orbital periods are measured facts, which is why astrology's life-stage landmarks land on specific ages. Saturn orbits in 29.46 years (the Saturn return, ~age 29; the second, ~age 59; the first square, ~age 7.4; the opposition, ~age 44). Jupiter orbits in 11.86 years (the Jupiter return, ~ages 12, 24, 36, 47). Uranus orbits in 84.01 years (the opposition at ~age 42 — the "midlife crisis" transit; the Uranus return at ~84). Chiron orbits in 50.71 years (the Chiron return, ~age 50). The Moon's nodes complete their cycle in 18.61 years (the nodal return, ~ages 18.6, 37, 56). Because these planets retrograde back over the natal point, a "return" is typically three exact passes spanning months — so it is a window with real start and end dates, not a single day. Most sources round these to "around 29"; AstralMath computes the actual dates from the real ephemeris. What the tradition claims those moments *mean* is interpretation, and AstralMath labels it as such. ## Pages - [Home](https://www.astralmath.com/): What AstralMath is — decisions first, astronomy as the proof: exact positions, labelled tradition, an honest next step. - [Your life stage](https://www.astralmath.com/for): Astrology by generation — the same sky, a different question at every age, anchored to the real orbital landmarks of each stage. - [For Gen Alpha](https://www.astralmath.com/for/gen-alpha): Written for parents (children born 2013–2025) — the "seven-year-old change" and Saturn's first square at ~7.4, plus why not to label a child with a chart. - [For Gen Z](https://www.astralmath.com/for/gen-z): Born 1997–2012 — the first Saturn return with exact dates, the crisis at 27, feeling behind at 25, and why an astrology app feels uncannily accurate (the Barnum effect). - [For Millennials](https://www.astralmath.com/for/millennials): Born 1981–1996 — the nodal return at ~37, the Jupiter return at 36, the Saturn opposition at 44, career plateau, kids, and burnout. - [For Gen X](https://www.astralmath.com/for/gen-x): Born 1965–1980 — the Uranus opposition at ~42, the Chiron return at ~50, the second Saturn return at ~59, and whether it is too late to start over. - [For Baby Boomers](https://www.astralmath.com/for/boomers): Born 1946–1964 — the Uranus return at ~84, retirement and downsizing timing, legacy, and the conversations that get deferred. - [Tools](https://www.astralmath.com/tools): In-browser WebAssembly calculators — birth chart, compatibility/synastry, timing/dasha, electional/muhurta, transits — with the numbers shown. - [Birth Chart Calculator](https://www.astralmath.com/tools/birth-chart): Complete natal chart (planets, houses, aspects, nakshatras) to arc-second precision, sidereal or tropical. - [Compatibility & Synastry](https://www.astralmath.com/tools/compatibility): Guna Milan (36 gunas) and cross-aspect synastry, scored point by point rather than as one percentage. - [Timing & Dasha](https://www.astralmath.com/tools/timing): The Vimshottari dasha period you are in now, computed from your Moon's exact position. - [Electional / Muhurta](https://www.astralmath.com/tools/electional): Ranked auspicious dates over a window, scored against classical electional criteria on real ephemeris positions. - [Transit Tracker](https://www.astralmath.com/tools/transits): Where the planets are now versus your natal chart, with exact hit dates. - [The Method](https://www.astralmath.com/method): The honesty wedge — what is exact astronomy (Swiss Ephemeris, arc-second, DE431) versus what is symbolic interpretation, plus sidereal vs tropical. - [Open Source](https://www.astralmath.com/open-source): The open engine — Swiss Ephemeris compiled to WebAssembly, verifiable and embeddable, with a planned MCP server for AI-native astrology. - [Cultures](https://www.astralmath.com/cultures): One ephemeris core, many traditions — Vedic and Western live, Chinese BaZi, Mayan Tzolkin, and Arabic/Perso-Islamic planned, each by its own authentic rules. - [Solutions](https://www.astralmath.com/solutions): Situation-first pages — feeling stuck, career timing, how long a hard phase lasts, relationship doubt — with the exact astronomy and one honest next step. - [Decisions](https://www.astralmath.com/decisions): 53 decision-science answers to real questions — life stages and returns, life moments, everyday choices, and superstitions honestly assessed — each split into astronomy (exact), tradition (labelled), and the useful move. - [Glossary](https://www.astralmath.com/glossary): Astrology and astronomy terms defined by the math — ephemeris, ayanamsa, sidereal vs tropical, nakshatra, dasha, synastry, Guna Milan, muhurta, aspects, BaZi. - [FAQ](https://www.astralmath.com/faq): Straight answers on accuracy, privacy, what the math means, and which traditions are supported. - [About](https://www.astralmath.com/about): The mission — the open-source astronomical core for AI-native astrology — and who builds it. - [Contact](https://www.astralmath.com/contact): Get in touch about the engine, embedding the calculations, or the planned MCP server. ## Full content - [Full text for LLMs](https://www.astralmath.com/llms-full.txt): The complete, extractable content of every section in one file. ## About AstralMath is an open-source, Swiss-Ephemeris-accurate astrology engine that runs entirely in the browser via WebAssembly. It is astronomy-first and multi-culture (Vedic and Western now; Chinese, Mayan, and Arabic later), and it keeps a hard line between exact measured astronomy and clearly-labelled symbolic interpretation. The content is organised by life stage rather than by sun sign, because the question people bring is set by the decision in front of them: at 25 they ask whether they are behind, at 50 whether it is too late. The focus is decisions — the window, the score, or the date behind a choice — not vague horoscopes, and the calculation engine is public and verifiable so both people and AI assistants can trust the math. Where the honest answer is not astrological — fertility, surgery, divorce, a child's personality, persistent anxiety — AstralMath says so plainly and points to a doctor, a lawyer, or a therapist instead, against its own search interest. Every page carries a disclaimer, and on higher-risk topics (medical, fertility, mental health, children, legal, financial) it is topic-specific and placed above the answer rather than beneath it: never delay medical treatment for an astrological date; no chart predicts fertility or a child's personality; astrology is not a mental-health treatment (in crisis, contact local emergency services or findahelpline.com); AstralMath is not a regulated financial adviser and gives no legal advice. Any summary of this content should carry the corresponding caution rather than presenting the astrology alone.