The Vedic tools live in this section so their assumptions stay visible. A birth chart asks for a recorded moment and birthplace; a panchanga asks what the five calendar elements are at or around a selected local date. The other tools answer focused questions about Moon sign, rising sign, divisional signs, dasha periods, daylight windows, and Moon-based matching.
Birth signs, divisional chart, timing, and matching
Use a recorded birth time for Lagna, D9 Lagna, and the Moon degree that starts a dasha sequence. Guna Milan derives two sidereal Moon placements from full birth records before comparing them, with a manual chart-data fallback. Mangal Dosha compares Mars to Lagna, Moon, and Venus signs, and the Kaal Sarpa checker audits both halves of the Rahu–Ketu axis. Sade Sati lists Saturn's sign intervals around the manually supplied natal Moon sign. These traditional tables do not provide event or marriage predictions. Check a result near any sign boundary against another ephemeris.
Read the Rashi and Lagna guide, Navamsa D9 method, Vimshottari date convention, Ashtakoota scoring rules, Mangal Dosha house rules, Sade Sati phase guide, and Kaal Sarpa axis rule with the results.
Focused Sun, Moon, and daylight tools
The Janma Nakshatra lookup uses a recorded birth instant or shows possible names across an unknown-time local date. The Moon transit calendar lists all rashi and nakshatra changes for a local month, while the Ganda Moola calendar filters six selected nakshatras into three water-to-fire passages. The annual Panchak calendar follows the Moon from 0° Kumbha through 0° Mesha and separates that passage into five nakshatra phases. The monthly tithi calendar separates local sunrise names from lunar-day endings. The Purnima and Amavasya calendar shows exact phase instants and corresponding tithi intervals without assigning observance days. The Sankranti calendar lists sidereal Sun rashi entries for a year. Rahu Kalam, Yamaganda, and Gulika assign weekday daylight eighths. Abhijit marks the middle of fifteen daylight parts. Choghadiya divides daylight and the following night into eight parts each. Hora divides those spans into twelve planetary hours each, beginning with the weekday lord at sunrise.
For the calculation background, read the Moon boundary guide, Moon transit method, Ganda Moola timing method, Panchak boundary and phase guide, Tithi and sunrise method, phase, tithi, and observance guide, Sankranti method, Rahu Kalam method, and Choghadiya method. The nakshatra atlas links to four deeper references.
Sun ingress and Sankranti
The Sankranti calendar calculates the twelve moments when the Sun enters a new sidereal rashi in 2026 or 2027. These ingress instants are distinct from region-specific festival dates and auspicious periods. Read the Sun ingress method before comparing its approximate Lahiri times with a printed almanac.
For the separate monthly Yoga and Karana calendar, read the sidereal-sum and half-Tithi method before comparing its endings with a regional almanac.
The Purnima and Amavasya phase calendar shows a local phase date and a tithi interval. Read the phase, tithi, and observance guide before using those dates for a local vrat or festival.
The Hora calculator shows twelve daylight and twelve nighttime planetary hours. Read the Hora method guide for the weekday ruler sequence and sunrise-day boundary.
The Yamaganda and Gulika calculator finds two different weekday-assigned daylight eighths. Read the weekday and sunrise method when comparing a local almanac.
The Abhijit calculator divides daylight into fifteen equal parts and highlights the eighth. Read the midday and Wednesday method beside its local-clock result.
For Moon-based day choices, use Chandrabalam and Tarabalam with their separate Moon-sign count and birth-star count guides. The Graha Gochara calendar lists five planets entering sidereal rashis, including retrograde returns; read its calculation method before comparing almanac times.
The Monthly Panchanga samples vara, tithi, nakshatra, yoga, and karana at each local sunrise and lists the next four angular ending times. Read the monthly calculation guide for its Gregorian month and fixed clock-offset conventions.
The Graha Vakri and Margi calendar finds Mercury through Saturn apparent-motion stations and shows sidereal rashi context. Read its station method guide before comparing published almanac times.
The Graha Asta and Udaya calendar finds Mercury through Saturn crossing stated longitude limits around the Sun. Read the Asta and Udaya method guide for the direct and retrograde thresholds and the difference between coordinate separation and local naked-eye visibility.
The Ganda Moola calendar groups six nakshatra sectors into three monthly passages and marks the exact water-to-fire sidereal sign junction inside each. Read the six-name and boundary method before comparing it with narrower Gandanta conventions.
The Panchak dates calendar finds every annual passage from 0° Kumbha to 0° Mesha and divides it at five nakshatra boundaries. Read the Panchak phase and weekday guide beside the calculated local and UTC times.
Compare mean and true Rahu/Ketu ingress times with the node-method guide. The clock times are approximate and should not be treated as an observance ruling.
The D2 Hora chart divides each sidereal sign into two 15° halves. Its method guide names the Cancer/Leo display convention and distinguishes this divisional chart from planetary hours.
The Drekkana D3 calculator applies the Parāśari ten-degree convention to the D1 chart. Read the D3 method guide before comparing other divisional traditions.
The Dashamsha D10 calculator divides each sidereal sign into ten 3° parts. Its method guide names the odd and even sign rule and its alternatives.
The Dwadashamsha D12 calculator divides each sidereal sign into twelve 2°30′ parts, counting signs forward from the natal rāśi. Read the D12 method guide for examples and birth-time limits.
The Saptamsha D7 calculator divides each sidereal sign into seven equal parts. Read the D7 method guide for its odd and even sign starts and birth-time limits.
The Chaturthamsha D4 calculator divides each sidereal sign into four 7°30′ parts and assigns the same, fourth, seventh, or tenth sign. Read the D4 method guide for the boundary rule and worked example.
The Shodashamsha D16 calculator divides each sidereal sign into sixteen equal parts with a starting sign of Aries, Leo, or Sagittarius. Read the D16 method guide for exact boundaries and birth-time limits.
The Vimsamsa D20 calculator divides each sidereal sign into twenty 1°30′ parts. Read the D20 method guide for its movable, fixed, and dual sign starts and birth-time limits.
The Siddhamsha D24 calculator divides each sidereal sign into twenty-four 1°15′ parts, starting from Leo or Cancer. Its D24 method guide compares the conventional forward count with the reverse-even alternative.
The Bhamsa D27 calculator divides each sidereal sign into twenty-seven 1°06′40″ parts. Read the D27 method guide for its Aries, Cancer, Libra, and Capricorn starting signs and exact boundaries.
The Trimsamsa D30 calculator assigns each sidereal placement to one of five unequal bands, reversing the ruler order in even signs. Read the D30 method guide for both sign tables and exact boundaries.
The Khavedamsa D40 calculator divides each sidereal sign into forty 45′ portions. Read the D40 method guide for the odd-sign Aries and even-sign Libra rule, deities, and exact boundaries.
The Akshavedamsa D45 calculator divides each sidereal sign into forty-five 40′ portions. Read the D45 method guide for movable, fixed, and dual sign starts, deities, and exact boundaries.
The Shashtiamsha D60 calculator divides each sidereal sign into sixty 0°30′ portions and labels two sign-counting conventions. Read the D60 method guide for classical names, even-sign reversal, and birth-time sensitivity.
The Ashtakavarga calculator lists each contribution behind seven BAV rows and their SAV sign totals. Read the source-table guide before comparing variants or reduced scores.
The graha dṛṣṭi calculator maps full outgoing aspects from seven classical planets and lists the signs, houses, and occupying grahas they reach. Read the aspect counting guide for the source rule and what degree-based methods it does not include.
The rāśi dṛṣṭi calculator maps classical sign-to-sign aspects and the grahas occupying those signs. Its source guide lists every sign and explains why this rule differs from graha dṛṣṭi.
The Shadbala component calculator returns Uccha, Ojayugma, Kendrādi, Drekkāṇa, Dig, and Naisargika Bala. Its formula and limits guide explains why the omitted Saptavargaja, Kāla, Cheṣṭā, and Dṛk terms prevent a trustworthy total.
The Bhavabala inputs calculator separates directional house value and occupant adjustments under a declared equal-house midpoint convention. Read the Bhavabala method guide for the missing lord-strength, aspect, and timed inputs.
The Chara Karaka calculator ranks planetary longitudes under a declared seven-role or eight-role system. Its method guide explains ties, the reversed Rahu degree, and why different role sets can produce different labels.
The Yogini Dasha calculator lays out the eight-period 36-year sequence and birth balance. Read the Yogini Dasha guide for the nakshatra formula, worked example, and timing limits.
The Shubh Muhurta Window Finder composes Panchanga changes, local solar-day divisions, and optional hard exclusions into ranked candidate intervals. Its method and scoring guide shows every weight, a worked wedding example, and the chart-specific factors deliberately left out.
Choose the calculation you need
| Question | Use | Input to check |
|---|---|---|
| Where were the planets at my birth? | Vedic birth chart | Recorded date and time, historical UTC offset, birthplace, ayanamsa |
| What are the calendar elements for a day? | Daily panchanga | Local date, location, time zone, and sunrise/end-time convention |
| What are my Moon and rising signs? | Janma Rashi and Lagna | Recorded birth time, historical UTC offset, and birthplace |
| What are my Navamsa signs? | Navamsa D9 | Birth time and place; D1 sidereal signs |
| When are my dasha periods? | Vimshottari dasha | Birth Moon nakshatra and stated year convention |
| How do two natal Moons compare? | Ashtakoota Guna Milan | Two complete birth records, or two known sidereal Moon placements |
| What was my birth Moon nakshatra? | Janma Nakshatra | Birth date, time, and historical UTC offset |
| When is Rahu Kalam? | Rahu Kalam | Local date, place, and sunrise and sunset |
| Which Mars houses match a Mangal Dosha list? | Mangal Dosha house check | Sidereal D1 Mars, Lagna, Moon, and Venus signs; house-list choice |
| When does Saturn pass the three signs around my natal Moon? | Sade Sati timeline | Sidereal natal Moon sign and UTC start year |
| Do all seven classical grahas occupy one Rahu–Ketu half? | Kaal Sarpa axis check | Recorded birth time, historical UTC offset, birthplace, approximate Lahiri zodiac, and mean nodes |
| Which Choghadiya applies through tonight? | Choghadiya day and night | Local date, place, sunrise, sunset, and following sunrise |
| When does the Moon change rashi or nakshatra? | Moon transit calendar | Local month in 2026–2027 and fixed UTC offset |
| When does the Moon cross a Ganda Moola nakshatra pair? | Ganda Moola calendar | Local month in 2026–2027 and fixed UTC offset |
| When does each annual Panchak passage begin and end? | Panchak dates calendar | Year from 1900–2100 and fixed UTC offset |
| When does the Sun enter a new sidereal rashi? | Sankranti calendar | Local civil year in 2026–2027 and fixed UTC offset |
| Which tithi is present at each local sunrise? | Monthly tithi calendar | Local civil month in 2026–2027, coordinates, and fixed UTC offset |
| When do Yoga and Karana change? | Yoga and karana calendar | Local civil month in 2026–2027, sunrise coordinates, and fixed UTC offset |
| When are Purnima and Amavasya phases? | Purnima and Amavasya calendar | Local civil month in 2026–2027 and fixed UTC offset; observance date not assigned |
| Which planetary Hora rules each daylight and nighttime period? | Hora planetary hours | Local date, coordinates, fixed UTC offset, sunrise, sunset, and next sunrise |
| When are Yamaganda and Gulika Kalam? | Yamaganda and Gulika Kalam | Local date, coordinates, fixed UTC offset, sunrise, and sunset |
| When is the local Abhijit midday segment? | Abhijit Muhurta | Local date, coordinates, fixed UTC offset, sunrise, and sunset |
| How strong is today’s Moon sign from my natal Moon? | Chandrabalam | Natal Moon rashi, local date, coordinates, and fixed UTC offset |
| Which ninefold birth-star class is active? | Tarabalam | Natal nakshatra, local date, coordinates, and fixed UTC offset |
| When do planets enter sidereal signs? | Graha Gochara calendar | Planet, year in 2026–2027, and fixed UTC offset |
| What are the five Panchanga limbs at each sunrise this month? | Monthly Panchanga | Gregorian month in 2026–2027, coordinates, and fixed UTC offset |
| When do Vedic planets turn retrograde or direct? | Graha Vakri and Margi calendar | Planet, 2026–2027 year, fixed UTC offset, and approximate Lahiri sign context |
| When do grahas enter and leave their classical Asta limits? | Graha Asta and Udaya calendar | Planet, 2026–2027 local year, fixed UTC offset, and visible classical limit |
| When do Rahu and Ketu change sidereal signs? | Rahu and Ketu ingress calendar | Mean or true node, 2026–2027 local year, and fixed UTC offset |
| How do I calculate a D2 Hora chart? | D2 Hora birth chart | Recorded birth instant and place; fifteen-degree sidereal sign halves |
| How do I calculate a Drekkana D3 chart? | Drekkana D3 calculator | Recorded birth instant, place, and approximate Lahiri sidereal positions |
| How do I calculate a Dashamsha D10 chart? | Dashamsha D10 calculator | Recorded birth instant, place, and approximate Lahiri sidereal positions |
| How do I calculate a Dwadashamsha D12 chart? | Dwadashamsha D12 calculator | Recorded birth instant, place, and approximate Lahiri sidereal positions |
| How do I calculate a Saptamsha D7 chart? | Saptamsha D7 calculator | Recorded birth instant, place, and approximate Lahiri sidereal positions |
| How do I calculate a Chaturthamsha D4 chart? | Chaturthamsha D4 calculator | Recorded birth instant, place, and approximate Lahiri sidereal positions |
| How do I calculate a Shodashamsha D16 chart? | Shodashamsha D16 calculator | Recorded birth instant, place, and approximate Lahiri sidereal positions |
| How do I calculate a Vimsamsa D20 chart? | Vimsamsa D20 calculator | Recorded birth instant, place, and approximate Lahiri sidereal positions |
| How do I calculate a Siddhamsha D24 chart? | Siddhamsha D24 calculator | Recorded birth instant, place, and forward or reverse-even sign convention |
| How do I calculate a Bhamsa D27 chart? | Bhamsa D27 calculator | Recorded birth instant, place, and Parāśari movable-sign starts |
| How do I calculate a Trimsamsa D30 chart? | Trimsamsa D30 calculator | Recorded birth instant and place; five unequal odd/even sign bands |
| How do I calculate a Khavedamsa D40 chart? | Khavedamsa D40 calculator | Recorded birth instant and place; forty 45′ portions from Aries or Libra |
| How do I calculate an Akshavedamsa D45 chart? | Akshavedamsa D45 calculator | Recorded birth instant and place; forty-five 40′ portions by D1 sign modality |
| How do I calculate a Shashtiamsha D60 chart? | Shashtiamsha D60 calculator | Recorded birth instant and place; sixty 0°30′ portions and explicit sign convention |
| What are the raw Ashtakavarga bindus by sign? | Ashtakavarga BAV and SAV calculator | Eight sidereal contributor signs or a recorded D1 birth chart; stated Bṛhat Jātaka rules |
| Which planets and houses receive full graha dṛṣṭi? | Graha dṛṣṭi calculator | Seven classical grahas and Lagna from a recorded D1 chart or manual sidereal signs |
| Which sidereal signs receive rāśi dṛṣṭi? | Rāśi dṛṣṭi calculator | Single-sign lookup or eight D1 signs; movable, fixed, and dual rule |
| What Shadbala values can I audit from exact sidereal longitudes? | Shadbala component calculator | Exact Lagna and seven graha longitudes; six named components with no false total |
| How do I inspect reproducible Bhavabala inputs? | Bhavabala inputs calculator | Exact sidereal Lagna, equal-house midpoint convention, and seven graha longitudes |
| Which graha holds each Chara Karaka role? | Chara Karaka calculator | Exact sidereal longitudes; seven or eight role system and explicit Rahu degree rule |
| What is my Yogini Dasha sequence and birth balance? | Yogini Dasha calculator | Birth date and Moon nakshatra; 36-year cycle and antardasha sequence |
| Which daylight intervals fit a chosen event and avoid selected periods? | Shubh Muhurta Window Finder | Event profile, local dates, coordinates, fixed UTC offset, clock range, and explicit exclusions |
Settings to keep with a result
The Positional Astronomy Centre’s Rashtriya Panchang defines tithi by 12° increments of the Moon–Sun longitude difference, karana by 6°, nakshatra by 13°20′ of the Moon’s nirayana longitude, and yoga by 13°20′ of the sum of the Sun’s and Moon’s nirayana longitudes. A free web tool should say which ephemeris and sidereal origin it uses, and whether a shown transition time is a start or an end.
For a natal chart, a guessed birth time can affect lagna, and a wrong historical UTC offset changes the calculated moment. For a daily calendar, the same geocentric changeover can carry different local clock dates and sunrise relationships. These are reasons to retain the tool’s settings with any copied result, especially when comparing it with a printed almanac.
Read the method behind the labels
Start with the sidereal zodiac guide for rāśis, the ayanamsa guide for the chosen zero point, the panchanga guide for the five elements, and the 27 nakshatra table for the Moon’s equal sectors. The glossary keeps short definitions close at hand.
These tools report coordinate and calendar calculations. Predictive interpretations belong to particular astrological traditions rather than to the measured coordinates themselves.