अमावस्या amāvasyā
New-moon day: the tithi when the Moon and Sun share the same longitude, ending one lunar month and seeding the next.
अमावस्या — जब चाँद और सूरज एक ही रेखांश पर होते हैं; चंद्र-मास का अंतिम दिन।
50 terms · devanagari + iast + plain english + plain hindi
शब्द-कोशःGlossary
Every jyotiṣa term on this site, said plainly — what is computed geometry, and what is the tradition’s interpretive claim. If you grew up hearing these words at home but nobody ever defined them, or you’re checking whether any of this survives contact with arithmetic: start here.
01
संशयि-यात्राThe skeptic’s tour
five checks · ~15 minutes · no faith requiredYou don’t have to believe anything to use this site. The positional layer is astronomy — measurable, reproducible, falsifiable. Here is how to test us in five steps, hardest evidence first.
जन्म-कुण्डलीRun the free chart
Enter birth details on the free chart — no payment wall in front of the computation. You get the full kuṇḍalī: lagna, 16 vargas, daśā timeline, every longitude shown to the arc-minute. Everything downstream of this page is checkable against it.
सूर्य-चन्द्र-परीक्षाCheck Sun & Moon against any ephemeris
Take the Sun and Moon longitudes from your chart and compare them with any source you already trust — NASA/JPL Horizons, Swiss Ephemeris, your family pañcāṅga. Our published bounds vs JPL Horizons across an 18,263-day grid (2000–2050): Sun 0.13′ p95 / 0.21′ max · Moon 0.51′ p95 / 1.0′ max — in plain words, Sun within ~0.2′ and Moon within ~1′. Full per-graha table on /accuracy.
विधि-पाठःRead the methodology
How the numbers are made: Sūrya-Siddhānta framework + Kerala-school Tantrasaṅgraha (1501) series + an honestly-labelled, observation-fitted dṛk-saṁskāra layer — every divergence named, nothing hidden inside the model. Pre-registered method on /accuracy#method.
स्वयं-परीक्षाRun the bench yourself
Don’t take our residuals on faith. The test grid, audit scripts and reproducibility notes are public — rerun the bake-off against your own JPL or Swiss build and publish what you find. Start at the reproducibility block on /accuracy and the open research surface at /research. Refutation is invited, in writing.
वचन-नियमःThe prediction grammar we use
Where interpretation enters, it is labelled. Our grammar: calculative, dated predictions — mathematics, not mysticism · no fear · no remedies · no guarantees. A claim that isn’t dated and derived doesn’t ship. The epistemic split between computed fact and tradition’s claim is documented on /research.
Worst-case line, stated once and plainly: every graha stays within 3.3′ worst-case across fifty years. If you can show otherwise, we publish your refutation.
02
शब्दाःThe terms
a–z · search filters all four scripts50 / 50 terms
A
अन्तर्दशा antaradaśā
A sub-period inside a mahādaśā. Each major period subdivides among all nine grahas in the same fixed proportions, giving a finer dated timeline.
महादशा के भीतर चलने वाली छोटी अवधि — हर ग्रह की अपनी अंतर्दशा होती है।
अष्टकवर्गः aṣṭakavarga
A points-based system that scores each sign 0–8 from eight reference points, used to read transit strength numerically rather than by rule-of-thumb.
अष्टकवर्ग — हर राशि को अंक देकर गोचर की ताकत नापने की गणितीय विधि।
अष्टकूटम् aṣṭakūṭa
The eight-factor compatibility score used in chart matching, totalling 36 guṇas. A computed tally of the two Moon positions — not a verdict on a marriage.
कुंडली मिलान के आठ कूट — कुल ३६ गुण; दो चंद्र-स्थितियों का गणितीय मिलान।
अयनांशः ayanāṁśa
The angular offset between the tropical (equinox-anchored) and sidereal (star-anchored) zodiacs — roughly 24° in our era, increasing slowly. We compute it dynamically for every date.
सायन और निरयण राशिचक्र के बीच का कोण — आज लगभग २४ अंश।
B
भावः bhāva
A house: one of twelve life-domains counted from the lagna (self, wealth, siblings, home, and so on). Houses are positions, grahas are actors.
भाव यानी घर — लग्न से गिने जाने वाले बारह जीवन-क्षेत्र।
D
दशा daśā
A planetary-period system that slices a life into dated ruler-ships. Bharat Ephemeris routes 12 daśā systems; Vimśottarī is the most used.
दशा — जीवन को ग्रहों की समय-अवधियों में बाँटने की प्रणाली।
दृक्-संस्कारः dṛk-saṁskāra
Literally "observation correction": the honestly-labelled, observation-fitted layer that aligns classical-series output with the measured sky. We name this layer openly instead of hiding it inside the model.
दृक्-संस्कार — गणना को असली आकाश से मिलाने वाली सुधार-परत, जिसे हम खुले तौर पर बताते हैं।
E
ग्रह-सारणी ephemeris (graha-sāraṇī)
A table of computed planetary positions over time. Bharat Ephemeris is one: every screen on this site is a view into the same position engine.
ग्रहों की स्थिति की समय-सारणी — यही इस पूरी साइट की नींव है।
G
घटी ghaṭī
A classical time unit of 24 minutes; sixty ghaṭīs make one day. The traditional clock behind muhūrta timing.
घटी — २४ मिनट की पारंपरिक समय-इकाई; दिन-रात में साठ घटियाँ।
गोचरः gocara
Transit: where the grahas are moving now (or on any date), read against the fixed positions of a birth chart.
गोचर — ग्रह अभी कहाँ चल रहे हैं, जन्म-कुंडली की तुलना में।
ग्रहः graha
One of the nine "seizers": Sun, Moon, Mars, Mercury, Jupiter, Venus, Saturn, plus the lunar nodes Rāhu and Ketu. Not all are planets in the modern sense — the word means an astronomical reference point that is computed and tracked.
ग्रह — सूर्य, चंद्र, मंगल, बुध, गुरु, शुक्र, शनि और राहु-केतु; कुल नौ।
ग्रह-युद्धम् graha-yuddha
"Planetary war": the classical name for two grahas standing within one degree of each other — a precise geometric condition, computed, not metaphor.
ग्रह-युद्ध — जब दो ग्रह एक अंश के भीतर आ जाएँ।
J
जन्म-नक्षत्रम् janma-nakṣatra
The nakṣatra occupied by the Moon at your birth. It seeds the Vimśottarī daśā clock and names your "birth star."
जन्म के समय चंद्रमा जिस नक्षत्र में था — वही आपका जन्म-नक्षत्र।
ज्योतिषम् jyotiṣa
The Indian discipline of positional astronomy and its interpretive tradition — literally "the science of light." The computational core is mathematics; the interpretive layer is tradition, and we keep the two labelled apart.
ज्योतिष — प्रकाश का शास्त्र; गणना गणित है, फल-कथन परंपरा है।
K
कला kalā (arc-minute)
One sixtieth of a degree — the unit of our accuracy claims. Measured against JPL Horizons across an 18,263-day grid (2000–2050): Sun 0.13′ p95 / 0.21′ max, Moon 0.51′ p95 / 1.0′ max, every graha within 3.3′ worst-case.
कला — अंश का साठवाँ भाग; हमारी शुद्धता इसी इकाई में नापी और प्रकाशित होती है।
करणम् karaṇa
Half a tithi. Eleven karaṇa names cycle through the sixty half-tithis of a lunar month; one of the five limbs of the pañcāṅga.
करण — तिथि का आधा भाग; पंचांग का एक अंग।
केरल-परम्परा kerala-paramparā
The Mādhava lineage of mathematician-astronomers (14th–16th century Kerala) whose infinite-series methods predate their European counterparts by centuries. Our planetary model descends from this school.
केरल की माधव-परंपरा — जिसकी श्रेणी-गणित यूरोप से सदियों पहले की है।
केतुः ketu
The south lunar node — the descending intersection of the Moon's orbit with the ecliptic. A computed point, always exactly opposite Rāhu.
केतु — चंद्र-कक्षा का दक्षिणी छेदन-बिंदु, सदा राहु के ठीक सामने।
कुण्डली kuṇḍalī
Your birth chart: a map of where the nine grahas and the lagna stood at the exact minute and place of your birth. It is computed, not divined — two engines given the same birth data should agree.
कुंडली — जन्म के क्षण और स्थान पर आकाश का नक्शा; यह गणना है, अनुमान नहीं।
L
लग्नम् lagna
The ascendant: the zodiac degree rising on the eastern horizon at the birth moment. It anchors the houses, which is why birth time matters to the minute.
लग्न — जन्म के समय पूर्व क्षितिज पर उगती राशि; इसी से सारे भाव गिने जाते हैं।
लग्नेशः lagneśa
The graha that rules the lagna sign — traditionally read as the chart's principal significator.
लग्नेश — लग्न-राशि का स्वामी ग्रह।
M
महादशा mahādaśā
A major planetary period in Vimśottarī — between 6 and 20 years per graha, with the full nine-graha cycle spanning 120 years.
महादशा — विंशोत्तरी की बड़ी अवधि, ६ से २० वर्ष तक प्रति ग्रह।
मुहूर्तम् muhūrta
Electional timing: choosing a window for an undertaking. Classically a 48-minute unit; in practice the computed slicing of a day into stronger and weaker intervals.
मुहूर्त — किसी कार्य के लिए समय-खिड़की चुनना; दिन का गणितीय विभाजन।
N
नक्षत्रम् nakṣatra
One of 27 lunar mansions of 13°20′ each — the Moon-calendar's native coordinate system, older than the 12-sign zodiac in Indian usage.
नक्षत्र — चंद्र-पथ के २७ भाग, हर एक १३ अंश २० कला का।
नवांशः navāṁśa
The ninth divisional chart (D9): each sign split into nine parts of 3°20′. The most-consulted varga after the birth chart itself.
नवांश (D9) — हर राशि के नौ भाग; जन्म-कुंडली के बाद सबसे अधिक देखा जाने वाला वर्ग।
नीचः nīca
Debilitation: the sign where a graha is traditionally weakest (e.g. Sun in Libra). The opposite point of its exaltation — a fixed, computable position.
नीच राशि — जहाँ ग्रह परंपरा में सबसे कमज़ोर माना जाता है।
निरयणम् nirayana
Sidereal reckoning: longitudes measured against the fixed stars. This is the frame jyotiṣa uses — it differs from the Western tropical frame by the ayanāṁśa.
निरयण — तारों से नापा गया राशिचक्र; भारतीय ज्योतिष इसी पर चलता है।
P
पादः pada
A quarter of a nakṣatra (3°20′). The 27 × 4 = 108 padas map exactly onto the 108 navāṁśa divisions — the geometry is shared, not coincidental.
पाद — नक्षत्र का चौथाई भाग; कुल १०८ पाद।
पञ्चाङ्गम् pañcāṅga
The "five limbs" almanac — tithi, vāra, nakṣatra, yoga, karaṇa — computed for a given day and place. Our live pañcāṅga derives all five from the same position engine.
पंचांग — तिथि, वार, नक्षत्र, योग, करण: दिन के पाँच अंग।
प्रश्नः praśna
Horary technique: casting a chart for the moment a question is asked rather than for a birth. The computation is identical; only the seed moment differs.
प्रश्न-कुंडली — जन्म की जगह प्रश्न पूछे जाने के क्षण की कुंडली।
पूर्णिमा pūrṇimā
Full-moon day: the tithi when the Moon stands 180° from the Sun.
पूर्णिमा — जब चंद्रमा सूर्य से ठीक १८० अंश पर हो।
R
राहुः rāhu
The north lunar node — the ascending intersection of the Moon's orbit with the ecliptic. A computed point, not a body; it still has an exact longitude at every instant.
राहु — चंद्र-कक्षा का उत्तरी छेदन-बिंदु; पिंड नहीं, गणित का बिंदु।
राहु-कालः rāhu-kāla
A daily one-eighth segment of daytime, traditionally set aside from new beginnings. Computed from local sunrise and sunset — which is why it shifts with place and season.
राहु-काल — दिन के आठ भागों में से एक; सूर्योदय-सूर्यास्त से गणना होती है।
राशिः rāśi
One of twelve equal 30° zodiac signs — Meṣa (Aries) through Mīna (Pisces) — measured sidereally in jyotiṣa.
राशि — राशिचक्र के बारह बराबर भाग, हर एक ३० अंश का।
S
साहमः saham
A sensitive point computed by adding and subtracting graha longitudes (e.g. the fortune point), used chiefly in varṣaphala. Pure arithmetic on chart positions.
साहम — ग्रह-रेखांशों के जोड़-घटाव से बनने वाला संवेदी बिंदु।
सङ्क्रान्तिः saṅkrānti
The Sun's ingress into a new rāśi — twelve per year. Makara Saṅkrānti is the best known. An exact, computable timestamp.
संक्रांति — सूर्य का नई राशि में प्रवेश; साल में बारह बार।
सायनम् sāyana
Tropical reckoning: longitudes measured from the moving equinox. Western astrology's frame; it drifts against the stars by about one degree per 72 years.
सायन — विषुव से नापा गया राशिचक्र, जो तारों के सापेक्ष धीरे-धीरे खिसकता है।
सूर्य-सिद्धान्तः sūrya-siddhānta
The classical Sanskrit treatise of computational astronomy — mean motions, epicycle corrections, eclipse machinery. One of the foundational layers of our engine, stated as such.
सूर्य-सिद्धांत — भारतीय खगोल-गणना का प्राचीन मूल ग्रंथ।
T
तन्त्रसङ्ग्रहः tantrasaṅgraha
Nīlakaṇṭha Somayājī's treatise of 1501 (Kerala school), whose planetary model improves on earlier epicycle schemes. Our graha computation descends from it — 100% Bhāratīya lineage, zero foreign runtime.
तंत्रसंग्रह (१५०१) — नीलकंठ सोमयाजी का ग्रंथ; हमारे ग्रह-गणित की रीढ़।
तिथिः tithi
A lunar day: each 12° step of the Moon–Sun angle. Thirty tithis make a lunar month; their start and end moments are exact and computable (ours land within about 0.4 minutes).
तिथि — चंद्र और सूर्य के कोण का हर १२ अंश का चरण; चंद्र-मास में तीस तिथियाँ।
U
उच्चः ucca
Exaltation: the sign — in fact the exact degree — where a graha is traditionally strongest (e.g. Sun at 10° Aries). A fixed, computable position, whatever one makes of the interpretation.
उच्च राशि — जहाँ ग्रह परंपरा में सबसे बलवान माना जाता है।
V
वक्री vakrī
Retrograde: the apparent backward motion of a graha as Earth overtakes it (or is overtaken). An optical effect of two moving viewpoints — fully predicted by the geometry.
वक्री — ग्रह की दिखने वाली उल्टी चाल; यह दृष्टि-भ्रम पूरी तरह गणना-सिद्ध है।
वारः vāra
The weekday, reckoned sunrise to sunrise rather than midnight to midnight, each ruled by one of the seven visible grahas.
वार — सूर्योदय से सूर्योदय तक गिना जाने वाला दिन।
वर्गः varga
A divisional chart: the zodiac re-divided at finer harmonics, D1 through D60 — D1 rāśi (the birth chart), D2 horā, D3 drekkāṇa, D9 navāṁśa, D10 daśāṁśa, D60 ṣaṣṭyaṁśa among them. Bharat Ephemeris computes 16 vargas.
वर्ग — कुंडली के सूक्ष्म विभाजन (D1 से D60); यह इंजन १६ वर्ग बनाता है।
वर्षफलम् varṣaphala
The annual chart: cast for the moment the Sun returns to its exact birth longitude each year (a solar return, in Western terms).
वर्षफल — हर साल सूर्य के जन्म-स्थान पर लौटने के क्षण की कुंडली।
विंशोत्तरी vimśottarī
The most-used daśā system: a 120-year cycle of nine planetary periods, seeded by the Moon's nakṣatra at birth. Deterministic arithmetic — same birth data, same timeline, every time.
विंशोत्तरी — १२० वर्ष का दशा-चक्र, जन्म-नक्षत्र से आरंभ।
Y
योगः (कुण्डली) yoga (chart combination)
A named graha configuration in a chart — Gaja-Kesarī, Budha-Āditya and hundreds more. Our engine catalogs them as computed geometric patterns; what they "mean" is the tradition's claim, clearly labelled as such.
कुंडली-योग — ग्रहों की विशेष ज्यामितीय स्थिति का पारंपरिक नाम।
योगः (पञ्चाङ्गम्) yoga (pañcāṅga limb)
In the almanac: one of 27 divisions of the SUM of the Sun's and Moon's longitudes. A different quantity from chart yogas — same word, two meanings.
पंचांग-योग — सूर्य और चंद्र के रेखांशों के योग के २७ भाग।
योगतारा yogatārā
The junction star of a nakṣatra — the identified bright star (Aldebaran for Rohiṇī, Spica for Citrā…) that anchors the mansion to the real sky.
योगतारा — हर नक्षत्र का प्रमुख तारा, जो उसे असली आकाश से जोड़ता है।
Missing a term you expected? The deeper computational surfaces each carry their own reference tables — 27 nakṣatras, 16 vargas, 12 daśā systems, live pañcāṅga — and the lesson paths on /learn go from zero to chart-literate.