Skip to main content
MyBirthChart

Trimsamsa Chart Calculator (D30)

The **Trimsamsa (D30)** is the divisional chart classically used to study misfortunes, hidden weaknesses, and troubles a person may need to guard against — unlike most other varga charts, it uses unequal degree bands rather than equal divisions, each band mapped to one of five planets’ signs.

Ayanamsa: Lahiri (Chitrapaksha) · Division: D30 (thirtieth-harmonic) · Rule: unequal 5/5/8/7/5° bands → Mars/Saturn/Jupiter/Mercury/Venus signs (reversed for even signs)

Don't know your birth time? We'll approximate your chart using 6:00 AM local time. The Lagna (Ascendant) and house positions will be approximate.

4.8 average · 50 reviews
James Whitfield

Reviewers

Sarah Mitchell, M.A. in Cultural Astronomy & Astrology and Marcus Reynolds, Professional Astrologer & Astronomer

Based on 5 sources
127 people find this calculator helpful

Last updated:

What Is the Trimsamsa (D30) Chart, and Why Is It Different?

Unlike the D9, D10 or most other divisional charts, the D30 does not split each sign into thirty equal parts. Instead, an odd sign is divided into five unequal bands — 5°, 5°, 8°, 7°, and 5° — assigned respectively to Mars, Saturn, Jupiter, Mercury, and Venus’s signs; for an even sign, the same band widths apply but the assigned planets’ signs run in reverse order.

Reading Misfortunes and Weaknesses From the D30

Which of the five planetary bands a graha falls into is read as an indicator of the particular type of difficulty or weakness associated with that planet’s classical significations — this chart is consulted specifically to identify areas needing caution, not general life themes.

Not a Fatalistic Reading

Classical use of the D30 identifies tendencies toward difficulty, not certainties — astrologers traditionally pair a D30 reading with remedial guidance (behavioral, not superstitious) rather than treating it as an unavoidable prediction.

Trimsamsa Chart Calculator (D30) FAQs

What is the Trimsamsa (D30) chart used for?
Studying misfortunes, hidden weaknesses, and areas of life that may need particular caution.
Why does the D30 use unequal bands instead of equal divisions?
This is the classical Parashari rule for this specific chart — five bands of 5°/5°/8°/7°/5° each mapped to a different planet’s sign, reversed in order for even signs.
Does a difficult D30 placement mean something bad will definitely happen?
No — it’s traditionally read as a tendency or an area needing more caution and awareness, not a fixed, unavoidable outcome.
Which five planets define the D30 bands?
Mars, Saturn, Jupiter, Mercury, and Venus, in that order for odd signs, and reversed for even signs.
Do I need an accurate birth time?
Yes — the D30 Lagna depends on your D1 Lagna, which requires a precise birth time.

Related Divisional Charts Calculators

Navamsa Chart Calculator (D9)

Generates your Navamsa (D9) chart — the ninth-harmonic divisional chart used to judge marriage and the strength of planets.

Dasamsa Chart Calculator (D10)

Generates your Dasamsa (D10) chart — the tenth-harmonic divisional chart used to analyze career and public standing.

Saptamsa Chart Calculator (D7)

Generates your Saptamsa (D7) chart — the seventh-harmonic divisional chart used to study children and progeny.

Drekkana Chart Calculator (D3)

Generates your Drekkana (D3) chart — the third-harmonic divisional chart used to study siblings and courage.

Dwadasamsa Chart Calculator (D12)

Generates your Dwadasamsa (D12) chart — the twelfth-harmonic divisional chart used to study parents and lineage.

Shodasamsa Chart Calculator (D16)

Generates your Shodasamsa (D16) chart — the sixteenth-harmonic divisional chart used to study vehicles and comforts.

Vimsamsa Chart Calculator (D20)

Generates your Vimsamsa (D20) chart — the twentieth-harmonic divisional chart used to study spiritual pursuits.

Chaturvimsamsa Chart Calculator (D24)

Generates your Chaturvimsamsa (D24) chart — the twenty-fourth-harmonic divisional chart used to study education and learning.

Bhamsa Chart Calculator (D27)

Generates your Bhamsa (D27) chart — the twenty-seventh-harmonic divisional chart used to study inherent strengths and weaknesses.

Khavedamsa Chart Calculator (D40)

Generates your Khavedamsa (D40) chart — the fortieth-harmonic divisional chart used to study maternal-line effects.

Akshavedamsa Chart Calculator (D45)

Generates your Akshavedamsa (D45) chart — the forty-fifth-harmonic divisional chart used to study paternal-line effects.

Shashtiamsa Chart Calculator (D60)

Generates your Shashtiamsa (D60) chart — the sixtieth-harmonic divisional chart, the finest subdivision used for past-life karma.