A Living Instrument

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Seeker · दर्शन Astrologer · ज्योतिषी
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Birth · first {{ periodWord }}
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जातक
The active jātaka
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दर्शन The season, in a life

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☽ The progressed Moon · sāyana · {{ progSign }}

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Antardaśā · the season within the season
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On daśā — {{ trace }}
The root arithmetic · the eight yoginīs अष्टयोगिनी 1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 — the years sum to 36

Eight yoginīs rule in a fixed round, each for as many years as her place in it — one for Maṅgalā, rising to eight for Saṅkaṭā: a wheel of thirty-six years that repeats up to three times across a life (a hundred and eight in all). Four are gentle and four are fierce — sixteen kindly years against twenty that test.

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आरम्भ Which yoginī opens the life? Count the Moon's birth-nakṣatra from Aśvinī, add three, and divide by eight — the remainder names her (a remainder of nought is the eighth, Saṅkaṭā). From there the round runs in order, and its thirty-six years turn again up to three times to span a life.
The root arithmetic · why these years मूलगणित 6 · 10 · 7 · 18 · 16 · 19 · 17 · 7 · 20 — none of them arbitrary

The Parāśara school derives each term from the one before it — a chain of meanings, not a table of constants. Read them in the order they are built:

☉︎ Sūrya 6
Kṛttikā — the Sun's own first nakṣatra — is a cluster of six stars: the seed number of the whole cycle.
☽︎ Candra 10
Creation keeps a quarter of the wheel empty: 360° − 90° = 270° — the nine months (270 days) of the womb. 270 ÷ 27 stars = 10.
♀︎ Śukra 20
The cycle that opens with the Sun closes with Venus: 120 ÷ 6 = 20 — the longest season of all.
♃︎ Guru 16
Sun 6 + Moon 10 = 16 — the two parents joined; Jupiter, keeper of the jīva, carries them both.
☊︎ Rāhu 18
The Sun's 6 tripled: 6 × 3 = 18 — the eclipsing shadow multiplies the light it swallows.
♄︎ Śani 19
Śukra weighed against Rāhu: 20⁄18 → 10⁄9 → 10 + 9 = 19 — Saturn holds the balance of the two.
☋︎ Ketu 7
The serpent coils from Meṣa — his own Aśvinī — to Dhanus: seven signs of the coil, seven years.
☿︎ Budha 17
Ketu 7 + Moon 10 = 17 — Mercury, the Moon's own son, carries both inheritances.
♂︎ Kuja 7
Budha 17 − Moon 10 = 7 — Mars keeps what the son sets down.

The nine sum to 120 — the puruṣāyus, the full ordained span a life is lent. And the Sun's same seed of six builds the sixty-year wheel of saṃvatsaras: 6 × (1 + 2 + 3 + 4) = 60.