Seven parts of 4°17′09″, odd from itself, even from the 7th
The saptamsha (D7) cuts each sign into seven parts of 30/7 degrees — 4°17′09″ each. In an ODD sign, count the seven parts from the sign itself. In an EVEN sign, count them from the SEVENTH sign from it. Find the part, then advance the start sign by part-minus-one.
10° Gemini: part 3, Gemini is odd, two past Gemini — Leo. 10° Cancer: part 3, Cancer is even, start at Capricorn, two on — Pisces. Shortcut for the part: degree times 7, divide by 30, round down, add 1.
The first and last parts, worked
Watch the boundaries. 2° Aries: still inside the first part, Aries is odd, so it stays in Aries. 28° Virgo: the seventh part, Virgo is even, so start at Pisces — the 7th from Virgo — and advance six: back to Virgo itself. The even walk can circle home; that is not an error.
Count the 7th from Virgo on your fingers: Virgo 1, Libra 2, Scorpio 3, Sagittarius 4, Capricorn 5, Aquarius 6, Pisces 7.
Children, fertility, and the legacy that outlives you
The saptamsha is the deep varga of the 5th house: children, progeny, fertility, and creative legacy. Note the wrinkle — seven parts, yet a 5th-house domain. Last lesson's divisor-echoes-house mnemonic is a tendency, not a law; tradition hears in the D7's seven the 7th-from-the-5th logic of lineage continuing.
So never derive a varga's domain from its divisor alone. Learn the assignment; the mnemonic is a memory aid that usually works, not a rule that always does.
Fertility climate, Jupiter, and the 5th
D7 lagna and its lord set the fertility climate. Jupiter — the karaka of children from lesson 10 — is weighed wherever it stands in the D7. The D7's own 5th house speaks for the first child, and tradition reads successive children from alternating houses in a 3rd-and-5th sequence with sex conventions attached.
That alternating-house practice has fine rules this course defers. Today, know it exists and know where it runs: inside the D7, never the D1.
Ten parts of 3°, odd from itself, even from the 9th
The dashamsha (D10), also called svargamsha, cuts each sign into ten crisp 3-degree parts. In an ODD sign, count the ten parts from the sign itself. In an EVEN sign, count from the NINTH sign from it. Same grammar as the D7 — only the even-sign starting point changes: 9th here, 7th there.
15° Aries: part 6, odd, five past Aries — Virgo. 5° Taurus: part 2, even, start at Capricorn, one on — Aquarius. 29° Leo: part 10, nine past Leo — Taurus. 0° Libra: part 1 — Libra itself.
Career's own constitution, and the bridge from the D1
The dashamsha rules career, profession, public deeds, and power — the 10th house's varga. D10 lagna and lord give the career's own constitution; the D10's 10th and its lord mark the peak. Weigh the career karakas from lesson 35 — Sun, Mercury, Jupiter, Saturn — each flavoring work differently.
The sharpest single look: find the D1 10th lord inside the D10. That placement is the bridge between what the rashi promises and what the profession actually becomes.
The meta rule
Ask the D1 whether; ask the varga how
Children and career each keep a private ledger. The D1's 5th and 10th say whether the promise exists; the D7 and D10 say how it will actually go — how fertile, how public, how high the peak. Confirm the promise in the rashi, then open the ledger and read it with the same four looks.
Career question: D1 10th first. Then D10 lagna and lord, the D10's 10th, the career karakas, and the D1 10th lord's D10 seat. Promise, then performance.