Divisional Charts API (D1–D60): Navamsa, Dashamsha, and Beyond

The Rashi chart (D1) is where Vedic astrology starts — but not where it ends. Divisional charts zoom in on specific life areas with extraordinary precision. The D9 (Navamsa) and D10 (Dashamsha) alone unlock career and marriage analysis that the D1 can only hint at. Here is what they are and how to fetch all of them.

What divisional charts are

Each sign (30°) is divided into N equal parts. A planet's position within a sign determines which sub-sign it occupies in each divisional chart. The D9 divides each sign into 9 parts (3°20' each). The D60 divides each sign into 60 parts (0°30' each) — requiring birth time accurate to within 4 minutes to be meaningful.

VedIntel computes all divisional charts using BPHS-correct formulas — the classical rules from Brihat Parasara Hora Shastra. The Navamsa uses trikona starts (Movable signs → Aries, Fixed → Leo, Dual → Sagittarius). The Hora uses the odd/even sign rule. The Trimshamsha uses unequal arc widths per planet. These are non-trivial to implement correctly — and where other APIs have bugs.

Complete D1–D60 reference

Fetching a divisional chart

const params = new URLSearchParams({
  api_key: 'vai_your_key',
  dob: '01/10/1977', tob: '11:40',
  lat: '11', lon: '77', tz: '5.5',
  chart_type: 'D9',   // Navamsa — most important divisional chart
  style: 'north'       // 'north' | 'south' | 'east'
})

const navamsa = await fetch(
  `https://vedintelastroapi.com/api/v1/horoscope/divisional-charts?${params}`
).then(r => r.json())

Response

// divisional-charts response (D9 Navamsa)
{
  "chart_type": "D9",
  "chart_name": "Navamsa",
  "planets": [
    { "name": "Ascendant", "zodiac": "Cancer",      "house": 1 },
    { "name": "Sun",       "zodiac": "Gemini",       "house": 12 },
    { "name": "Moon",      "zodiac": "Scorpio",      "house": 5 },
    { "name": "Mars",      "zodiac": "Capricorn",    "house": 7 },
    { "name": "Mercury",   "zodiac": "Leo",          "house": 2 },
    { "name": "Jupiter",   "zodiac": "Pisces",       "house": 9 },
    { "name": "Venus",     "zodiac": "Aries",        "house": 10 },
    { "name": "Saturn",    "zodiac": "Libra",        "house": 4 },
    { "name": "Rahu",      "zodiac": "Capricorn",    "house": 7 },
    { "name": "Ketu",      "zodiac": "Cancer",       "house": 1 }
  ],
  "svg": "data:image/svg+xml;base64,..."  // rendered chart image
}

Which charts to expose in a consumer app

Most users only need three charts — give them more and it becomes overwhelming:

• D1 Rashi — always show. The foundation chart.
• D9 Navamsa — show for marriage/relationship readings. Most astrologers check this first after D1.
• D10 Dashamsha — show for career/professional readings. CEOs and entrepreneurs pay for this.
• Others — unlock via premium or on-demand, not by default.