History & development
Jyotish is a broad Indian astral discipline; the Parashari label identifies a family of horoscope techniques associated with the authority of Parashara. It should not be treated as a single unchanged ancient software specification. Modern teaching combines inherited texts, commentaries and calculation choices.
Mythology & symbolic world
The grahas have religious identities as well as mathematical positions. Navagraha imagery includes Sun, Moon, five visible planets and Rahu and Ketu. Museum and art-historical evidence documents this changing iconography; it does not demonstrate planetary control over an individual.
Provenance: where the rules come from
The engine supplies selected sidereal natal positions and derived factors. A separate gochara workspace now calculates the transit sky and counts its nine grahas from natal Moon or natal Lagna. D9, Vimshottari and instant panchanga keep their own stated conventions. The selected-graha inspector also derives natal whole-sign placement, classical ruled houses and same-sign natal occupants. The relationship studio adds an independently calculated second birth for directional sign-level graha drishti, whole-sign overlays and counts from the other chart’s Moon and Lagna. The event finder adds bounded sidereal sign-ingress dates and longitude stations. An entered sign can be compared with the fixed natal Moon and Lagna; this adds timing geometry without supplying a complete transit judgement. Daily panchanga adds a separate local-date and place request: sunrise-defined vara, the four angular limbs and their calculated transitions, plus named daylight periods. A missing sunrise day is explicitly distinguished from any available civil-interval calculation. The lunar mansion atlas adds an explorable 27-part wheel and name library around the recorded birth Moon in any of six detailed sidereal references. Each entry separates dictionary-backed word origins, attributed divine and symbol associations, original reflections, and four standard Parashari D9 pada mappings. The divisional workspace now derives the declared sixteen-varga baseline from that same source frame, including special two-sign D2 and unequal sign-only D30. Its optional nearby-time comparison uses three independent UTC charts and leaves the recorded profile intact.
How it is calculated
Choices that change the result: The gochara view offers six detailed sidereal references, a natal Moon/Lagna anchor and selectable grahas. Rahu/Ketu follow the global true/mean-node setting. Fagan-Bradley and De Luce are labelled comparison references. Vimshottari and birth-instant panchanga remain fixed to Lahiri. Relationship comparison uses six detailed sidereal references and separate A→B/B→A directions; node targets follow the selected true/mean pair. Fagan-Bradley and De Luce remain comparison references. The separate event finder has seven references and ten moving planets, with native vocabulary for Lahiri/Raman/Krishnamurti/Yukteshwar and the seven classical planets. Its UTC windows are at most 730 days, or 90 for Moon; nodes are not searchable. Daily panchanga independently selects a date from 1800–2399, city or entered coordinates/time zone/elevation, one of the six sidereal references, and Swiss Hindu rising or apparent upper-limb sunrise. Fagan-Bradley and De Luce remain comparison references. Lunar atlas controls select the sidereal reference, browse a mansion, search names or source-based word origins/deities/symbols, and filter the list by Vimshottari period lord. Show my Moon restores the live birth-Moon selection. Its D9 link carries the selected reference and the actual natal Moon. The divisional workspace selects one of sixteen mappings and can compare three independently calculated UTC birth-time samples at offsets of 1, 2, 5 or 10 minutes.
Inspect your calculated data →Uses & use cases
- Compare sidereal birth-chart structures.
- Study the vocabulary of houses, rulers and planetary periods.
- Inspect the same transit graha separately from natal Moon and natal Lagna.
- Compare two sidereal natal charts with explicitly directed graha drishti and separate receiving houses.
- Follow a selected classical graha through direct sign entries and retrograde re-entries, then compare natal Moon and Lagna counts at each date.
- Read the local sunrise day’s five limbs and their dated endings before consulting a particular calendar or electional rule.
- Explore the calculated birth Moon’s mansion through its Sanskrit name, cited associations and four pada-to-D9 signs.
- Trace a selected graha through a named divisional mapping and compare nearby birth-time samples before interpreting fine divisions.
Interpretation methods
Read in layers
Establish the lagna and chosen zodiac, inspect houses and their rulers, then compare the Moon mansion, divisional chart and period sequence.
A sign placement and a house placement answer different structural questions; neither is a complete judgement by itself.
Read a two-chart sign relationship
Keep A→B distinct from B→A. Inspect the sending graha, its stated sign-aspect rule and the receiving chart's whole-sign topic before asking about a concrete interaction.
Mars has a fourth-sign contact to a target that is four signs forward, counted inclusively. The reverse contact depends on the other graha’s own rule; it is not automatically reciprocal.
Read the exact sidereal sign entry
Choose the named sidereal convention and selected classical graha. Use the entered sign after the crossing, count from natal Moon and separately from natal Lagna, then inspect natal ownership and the relevant period convention.
A graha can enter a sign, retrograde into the previous sign and enter again. Those dates do not by themselves establish favourable results, vedha clearance or dasha agreement.
Use the daily almanac as timing context
Begin with the selected place, sunrise convention and ayanamsha. Read tithi with paksha, lunar nakshatra with pada, calendrical yoga and karana, then inspect the actual ending times. Keep any optional birth-Moon count as a positional comparison.
An ending at 02:10 on the next civil date can still lie within the same sunrise-defined vara. Changing that calendar factor is not automatically a change in personal fortune.
Read a mansion without collapsing its different associations
Choose a reference and identify the actual Moon sector. Read the word-origin evidence, the named deity tradition and the separate Vimshottari period lord and D1 sign ruler. Use the original reflection as a question, then inspect the actual Moon in D9.
Manually selecting a different mansion explores its entry. It does not move the birth Moon, and the D9 handoff continues to inspect that actual Moon with the chosen reference.
Compare a division with its source chart
Choose the stated varga method, follow its source segment into the assigned sign and retain the D1 house and ruler context. Read any nearby-time comparison as three sampled charts.
A D60 assignment can differ after a small birth-time change, while three matching samples cannot certify the whole intervening interval.
Explore these reading approaches
Concepts in this tradition
Follow a term for its definition, word origin, evidence and connected ideas.
Disagreements & limits
- Ayanamsha, house conventions and commentary can change a reading.
- Traditional sage attribution is distinct from securely dated manuscript history.
- Gochara shows sign counts, sign rulers, natal house context and motion. It does not evaluate vedha, Ashtakavarga, graha drishti, favourable-position tables or an integrated dasha judgement.
- The separate Vimshottari link transfers the transit UTC instant. Check its local sidereal reference and calculation-year controls; transit chart settings are independent.
- Relationship mode applies a classical seven-graha sign-pattern baseline across two charts as an explicit comparison exercise. The selected Rahu/Ketu pair may receive contacts and enter placements/counts, but projects no aspects in this baseline.
- It does not calculate Kuta scores, Kuja Dosha, fractional or degree-strength drishti, rashi drishti, D9 matching or an integrated relationship judgement.
- Composite and Davison charts using a sidereal reference remain modern relationship constructions, even when their prompts use Jyotish chart vocabulary.
- The event finder searches ten physical planets; Sun through Saturn form its seven-classical-graha subset. It does not search Rahu/Ketu ingresses or stations. Outer-planet events are a modern comparison layer.
- Exact sidereal degree aspects in the event finder remain a modern analysis convention, not classical sign-counted graha drishti. A longitude station does not calculate cheshta bala or establish a complete strength verdict.
- Native sign-entry timing has the event finder's window, finite-sampling and uncertainty limits. Uncertified near-stationary touches must not become definite ingress claims.
- Daily panchanga supplies calendar geometry and named daytime intervals. It does not add festival arbitration, Tarabala/Chandrabala verdicts or a full muhurta judgement.
- At locations without a complete bounding sunrise pair, vara remains unassigned. Any civil fallback is labelled and does not become a traditional sunrise day.
- The lunar atlas uses 27 equal longitude sectors, not unequal stellar boundaries or a separately calculated Abhijit mansion.
- Mansion names and deities are inherited cultural categories; the atlas supplies neither a personality diagnosis nor compatibility or electional verdicts. Word origins and historical assignment variants remain explicit.
- The sixteen-varga workspace implements named mappings and constructed sign contexts; it does not add alternate mapping variants, full strength scoring, forecasts or birth-time rectification.
Sources & evidence
Practitioner sources describe their own systems. Historical and astronomical sources support different kinds of claims. Reading exercises are editorial teaching examples.
- P. V. R. Narasimha Rao: Vedic Astrology, an Integrated Approach, §§6.2.1–6.2.20 ↗original practitioner textbook
- The origin and early development of the nine planetary deities — University of Michigan ↗scholarly dissertation
- Parashara's Light 7.0 User Manual ↗official software manual
- Shri Jyoti Star 10 official help: Varga chart variations ↗first-party professional software documentation
- Astro Gold macOS: Dynamic Events ↗official professional-software manual
- Swiss Ephemeris: Programming Interface, position and speed ↗primary calculation documentation
- NASA StarChild: What does Mercury in retrograde mean? ↗official astronomical explanation
- Drik Panchang: Sunrise and sunset conventions ↗first-party almanac documentation
- Drik Panchang: Reading Panchang Timings ↗first-party almanac documentation
- Komilla Sutton: Personal Panchanga ↗practitioner primary
- Monier-Williams Sanskrit-English Dictionary: nakṣatra (University of Hyderabad) ↗historical dictionary in scholarly digital edition
- Vedāṅga Jyotiṣa deity sequence, YV32–35/RV25–28, in Indian Astronomy: A Source-book §12.10.1 ↗original Sanskrit text reproduced with translation
- Taittirīya Nakshatra Sukta (Sanskrit Documents) ↗original Sanskrit ritual text
- Brihat Parashara Hora Shastra, chapter 6, Sanskrit with R. Santhanam translation/commentary, printed pp.68–83 ↗classical Sanskrit text with modern translation and commentary
- P. V. R. Narasimha Rao: Personal Finances from Hora Chart (2003), pp.1–3 ↗original practitioner conference handout
- P. V. R. Narasimha Rao: Correct Siddhamsa Chart of Parasara (2012), pp.1–2 ↗original practitioner method proposal