> ## Documentation Index > Fetch the complete documentation index at: https://docs.geometry.app/llms.txt > Use this file to discover all available pages before exploring further. # get_birthdate > One birth date → birth card plus calendars, moon, season, retrogrades, and related systems. Production **Status:** Production — most tested with [`get_compatibility`](/tools/get-compatibility). Formerly `get_card_for_birthdate`. One birth date in → birth card and layered systems for that date: tarot (minor + **dual major** Greer and Tarot School), medicine, Lenormand, runes, ogham, geomancy, sidereal wheels, moon phase, season, retrogrades, and more. **One call returns** 26 symbolic systems across 20+ traditions — cards, tarot, five astrology wheels, numerology, chakras, moon phase, retrogrades, and multi-calendar years — as \~750 deterministic fields from a single date. | | | | ----------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Input** | `birth_date` (YYYY-MM-DD) | | **Range** | `1900-01-01` … `2100-12-31` → `temporal_context: "full"`; nearby dates outside that window (e.g. 1850, 2101) → `"extended"`; farther out → `"birth_card_only"` | | **Version** | `v2.8.0` | | **MCP URL** | `https://mcp.geometry.app/mcp` | **Ask (summary):** > Get the card for birthdate 1985-03-15. **Ask (raw JSON / full payload):** > give raw json for birthdate 1985-03-15 card That phrase calls `get_birthdate` and tells the **agent** to paste the tool result verbatim (not summarize). There is still only one tool input: `birth_date`. “Raw JSON” and “full payload” are the same object. The sample below is a **shortened teaching excerpt** (values from a live call). A full tool response for the same date includes every block (`medicine`, `lenormand`, full `astro_wheels`, full `retrogrades_active`, and the rest). **Full payload / raw JSON:** the tool always returns the complete object. Read the MCP or HTTP response body in code. In chat, use the “raw json” line above so the model does not summarize. ## Example response ```json theme={null} { "birth_date": "1985-03-15", "cosmic": { "card_no": 34, "suit_name": "diamonds", "suit_symbol": "♦", "unicard_name": "eight of diamonds", "unicard_symbol": "8♦", "ruling_planet": "mars", "unicard_emoji": "🃈", "word_groups": { "core": "concentration", "action": "acquire", "energy": "focus", "shadow": "obsession", "strength": "consolidation" }, "classical_element": { "element_no": 1700, "element_name": "earth", "element_symbol": "🜃" }, "periodic_element": { "element_no": 34, "atomic_no": 34, "element_name": "selenium", "element_symbol": "Se" } }, "season": { "season_name": "winter", "prev_anchor_name": "winter_solstice", "prev_anchor_dt": "1984-12-21", "next_anchor_name": "spring_equinox", "next_anchor_dt": "1985-03-20", "days_since_prev": 84, "days_until_next": 5 }, "moon_phase": { "phase_name": "waning_crescent", "phase_type": "intermediate", "prev_anchor": "last_quarter", "next_anchor": "new_moon", "days_until_next": 6 }, "astro_wheels": { "tropical": { "sign_name": "pisces", "sign_symbol": "♓︎", "house": { "house_no": 12, "house_name": "twelfth house" }, "ruling_planet": "poseidon", "body_part": "feet" }, "sidereal_true": { "sign_name": "pisces", "system_slug": "sidereal_true" }, "sidereal_iau": { "sign_name": "pisces", "system_slug": "sidereal_iau" }, "fagan_bradley": { "sign_name": "aquarius", "system_slug": "fagan_bradley" }, "vedic_rasi": { "sign_name": "pisces", "nakshatra": { "nakshatra_name": "revati", "pada_no": 3, "deity": "pushan" } } }, "tarot": { "unicard_name": "eight of pentacles", "arcana_class": "minor", "tarot_no": 72 }, "tarot_birth_cards": { "greer": { "card_count": 1, "is_same_card": true, "personality": { "tarot_no": 5, "tarot_name": "the hierophant", "tarot_roman": "V", "tarot_symbol": "5★" }, "soul": { "tarot_no": 5, "tarot_name": "the hierophant", "tarot_roman": "V", "tarot_symbol": "5★" }, "hidden_factor": { "in_chain": false } }, "tarot_school": { "card_count": 2, "is_19_chain": false, "major_1": { "tarot_no": 14, "tarot_name": "temperance", "tarot_roman": "XIV", "tarot_symbol": "14★" }, "major_2": { "tarot_no": 5, "tarot_name": "the hierophant", "tarot_roman": "V", "tarot_symbol": "5★" }, "major_3": { "in_chain": false } } }, "medicine": { "card_no": 34, "deck_type": "medicine", "unicard_name": "grouse", "unicard_slug": "grouse", "unirank_code": "a", "unicard_symbol": "34↓" }, "lenormand": { "card_no": 34, "deck_type": "lenormand", "unicard_name": "key", "unicard_slug": "key", "unicard_symbol": "8♦", "in_lenormand_tradition": true }, "lunar": { "sign_name": "ox", "year_no": 1985, "han_symbol": "牛", "sign_emoji": "🐂" }, "iching": { "iching_no": 34, "iching_name": "great_power", "glyph": "䷡", "pinyin": "da_zhuang" }, "numerology": { "birth_day_no": 74, "lifepath_gregorian": 32, "lifepath_vedic": 28, "lifepath_hebrew": 28 }, "calendar_years": { "hebrew": { "year": 5745, "month": 6, "day": 22 }, "persian": { "year": 1363, "month": 12, "day": 24 }, "chinese": { "year_no": 1985 }, "mayan": { "tzolkin_kin": 258, "longcount_kin": 1861857 }, "vedic_saka": { "year": 1906 } }, "calendar_meta": { "weekday": "friday", "week_no": 11, "is_weekend": false, "is_leap_year": false }, "retrogrades_active": [ { "planet_name": "pluto", "phase": "retrograde", "sign_tropical": "scorpio", "retro_start_dt": "1985-02-06", "retro_end_dt": "1985-07-12" }, { "planet_name": "venus", "phase": "retrograde", "sign_tropical": "aries", "cazimi_dt": "1985-04-03", "retro_start_dt": "1985-03-13", "retro_end_dt": "1985-04-25" }, { "planet_name": "saturn", "phase": "retrograde", "sign_tropical": "scorpio", "retro_start_dt": "1985-03-07", "retro_end_dt": "1985-07-25" } ], "norse_runes": { "rune_name": "berkano", "rune_glyph": "ᛒ", "sign_emoji": "🌱" }, "celtic_ogham": { "sign_name": "nion", "ogham_glyph": "ᚅ", "tree_name": "nion" }, "geomancy": { "figures": [ { "geomancy_name": "laetitia", "geomancy_symbol": "𜻨" } ] }, "temporal_context": "full" } ``` Deck faces on the birth `card_no` include **`cosmic`**, **`tarot`** (minor map), **`medicine`**, and **`lenormand`**. Major Arcana birth cards live under **`tarot_birth_cards`** with **both** methods every call: **`greer`** (Mary K. Greer — common default) and **`tarot_school`** (Amberstone). Cultural glyph systems include **`norse_runes`**, **`celtic_ogham`**, and **`geomancy`**. The `retrogrades_active` array in this sample is shortened; a live response includes major planets, asteroids, TNPs, and points. A full response carries \~30 systems for one date. Which numbers to build on: see the [Field glossary](/field-glossary). It separates tradition numbers like `card_no` and `tarot_no` from opaque catalog ids like `system_no`, and explains why `element_no` reads differently in the classical and periodic blocks. ## Out of published range Dates outside 1900–2100 do not crash the tool. Birth-card identity still follows month/day. | Band | Example | `temporal_context` | Notes | | ------------ | -------------------------- | ------------------ | ------------------------------------------------------------------------------------ | | **Extended** | `1850-06-15`, `2101-01-01` | `extended` | Outside the published window — full temporal fields still returned, labeled honestly | | **Out** | `1776-07-04`, `2200-01-01` | `birth_card_only` | Farther out — soft error envelope + birth card from month/day only | ## Related * [get\_compatibility](/tools/get-compatibility) — two dates * [get\_day](/tools/get-day) — calendar day (beta) * [get\_name](/tools/get-name) — name → cosmic cards (beta) * [Where your key goes](/connect-and-keys)