Charts, Calculations & Data

Browse chart, calendar, ephemeris, and location tools.

Enter a birth date, time, UTC offset, and coordinates to calculate a tropical chart.

Rank the closest tropical planetary degree ranges among 20 sourced public birth dates without guessing their birth hours.

Draw the current planets, Ascendant, and houses for a chosen place and UTC minute.

Choose eight house systems, additional points, selected fixed stars, object-pair aspects, declination contacts, and named local presets.

Map Sun through Pluto into 36 clockwise semiarc sectors from a recorded time and place.

Compare Earth-centred and surface-observer Moon and planet degrees for a recorded time and place.

Identify Grand Trines, T-squares, and Yods in a calculated birth chart.

Compare all twelve cusps and each planet’s house in eight methods for one fixed birth instant.

Read the geometry, changing cusp positions, and high-latitude fallbacks.

Mirror natal longitudes, inspect close contacts, and export the positions.

Read the solstice and equinox mirror formulas and contact limits.

Count Whole Sign years from a known or calculated rising sign and find the traditional ruler.

Calculate Level 1 and Level 2 periods from the Lot of Spirit or Fortune with exact UTC boundaries.

Progress both birth charts first, then compare their short-arc midpoint chart at a chosen target date.

Find the first solar crossing of a selected natal planet and draw the chart for that moment.

Calculate seven source-labeled lots with day and night equations and visible arithmetic.

Calculate two traditional lots with visible sect and formula arithmetic.

Browse 20 named stars and compare their dated longitudes with an independent birth chart.

Compare a recorded chart’s planets and angles with twenty named stars, using a chosen orb and CSV export.

Compare named-star and planet horizon or meridian event times for a local day.

Find a geometric morning reappearance marker for a named star and location.

Generate a time-aware written reading from chart factors and close aspects.

Calculate the Midheaven, tenth house, rulers, work-style planets, and close aspects from one recorded birth chart.

Separate personal resources, shared obligations, networks, valuation, expansion, and long-range limits.

Read affection, pursuit, comfort, play, partnership houses, rulers, and close aspects without a compatibility score.

Explore learning, comfort, confidence, energy, home, and play as careful support questions without fixed labels.

Explore planets, signs, houses, angles and aspects in a calculated chart.

Count chart elements and modes, then inspect a transparent planet-emphasis score.

Understand chart types, house systems, transits, and return charts.

Read chart symbols with young people without fixed labels, with birth-time and privacy guidance.

Compare synastry and composite methods before using either one.

Learn how a natal chart can be compared with a later date.

Compare natal placements, a selected transit sky, and secondary progressions in one independent calculator.

Map secondary progressed New and Full Moons to a selected life date or age.

See daily natal transits and exact aspect times across a chosen date range.

Explore measured contacts between a moving planet and a natal planet.

Compare hourly chart factors across a date span, with an optional exact birth-chart comparison.

Find the Moon sign at a recorded birth time, or check both possibilities when time is unknown.

Browse lunar calendars, birth Moon tools, and the methods behind each result.

Measure the natal Sun–Moon angle and check phase uncertainty when birth time is missing.

Browse calculated UTC intervals showing when the Moon enters and leaves each tropical sign.

Browse dated UTC intervals from the last exact major lunar aspect to the next tropical sign ingress.

Calculate the Ascendant from birth time and place, with a 15-minute sensitivity check.

Calculate the meridian angles from a recorded time and historical UTC offset.

Rotate a birth chart by the true or mean North Node and compare derived positions.

Compare tropical positions with approximate Lahiri sidereal placements and Whole Sign houses.

Multiply natal longitudes into H1–H36 derived charts and compare H2–H10 wheels.

Read worked examples and the H2–H10 angle families behind a calculated harmonic chart.

Compare the Sun’s house meaning with the calculated chart; a known birth time is required.

Explore Moon house themes with a calculated chart and recorded birth time.

Read twelve in-depth guides to the Moon in each zodiac sign, then check your calculated placement.

Compare reference-place and natal-cusp midpoint houses around the same composite planets.

Read how two composite house frames are constructed and why a planet can change house.

Click a synastry planet or aspect to inspect measured contacts, then compare a midpoint composite.

Understand cross-chart contacts, orbs, composite midpoints, and record limits.

Compare one chosen day with a recorded birth chart, with close aspects and exact contacts.

Search twelve calendar months of exact transits and retrograde repeats against a natal chart.

Compare daily Jupiter through Pluto curves, contact windows, and a combined index across one, three, or five years.

Compare a selected sky with a natal chart and inspect exact major aspects.

Compare the geometry, orbs, and birth-time limits of Grand Trines, T-squares, and Yods.

Read twenty guides to natal aspect pairs, with orbs and birth-time context.

Calculate planetary parallels and contra-parallels with a stated orb and coordinate method.

Compare two birth charts with cross-chart planetary aspects.

Explore selected cross-chart contacts and their measured aspects.

Calculate planetary midpoints, a reference-place Ascendant, and houses for two birth records.

Sort midpoint axes on 90° and 45° dials, inspect third-point contacts, and download a CSV table.

Find exact moving-planet crossings of Sun/Moon or all natal midpoint axes on a 90° dial.

Compare three or four birth records with two stated group midpoint methods and optional houses.

Draw a chart for the midpoint time and spherical midpoint place of two births.

View tropical natal and lunar-node-rotated positions in separate chart rings.

Calculate independent Western twelfth parts for natal planets, with a derived wheel and table.

Compare a symbolically progressed date with the natal chart.

Plot secondary-progressed declinations by age and find exact parallels or contra-parallels to a selected natal planet.

Find exact secondary-progressed Sun–Pluto contacts to natal planets across a selected 1–30 year span.

Compare natal placements with a stepped progression that advances one ephemeris day per completed lived lunar month.

Compare natal placements with the continuous minor progression of one lunar month per lived tropical year.

Find the mean Black Moon Lilith longitude, sign, and degree from a recorded time and historical UTC offset.

Advance natal positions by the Sun’s true secondary progressed arc.

Find exact true or mean/Naibod directed Sun–Pluto contacts to natal planets across a selected 1–30 year life interval.

Find exact UTC entries across fixed birth-chart cusps, including retrograde re-entries.

Find the moment when the Sun returns to its natal longitude in a chosen year.

Find the moment when the Moon returns to its natal longitude.

Find all exact natal-longitude returns, including retrograde repeats, across a bounded UTC range.

Compare birth and solar, lunar, Mercury, Venus, Mars, Jupiter, or Saturn return charts in one wheel.

Find the next repeat of a recorded natal Sun–Moon phase angle.

Find the last New or Full Moon before birth and draw its chart.

Find the Moon’s Western mansion and adjacent UTC boundary crossings under a stated equal tropical method.

Find exact UTC crossings of a chosen tropical zodiac degree, including retrograde repeats.

Calculate planetary positions for the current UTC moment.

Find planetary sign entries and direction changes by date.

Browse Mercury through Pluto station dates, retrograde periods, and source calendar rows.

Find exact New, quarter, and Full Moon times.

Find exact major aspects over a chosen date range.

Browse eclipse dates and check a local solar eclipse.

Check 2026–2027 eclipse degrees against natal planets with measured aspects and selectable orbs.

Build geocentric or heliocentric tables in tropical, approximate Lahiri, or draconic frames; add exact sky-event summaries and export CSV or print.

Calculate Sun-centered planetary positions, latitude, and distance for chosen UTC dates.

Draw a Sun-centred zodiac wheel with Earth and the planets for a chosen UTC birth moment.

Calculate the western ecliptic–prime-vertical intersection and its opposite from a recorded birth time and place.

Plot longitude curves and station dates with SVG and CSV export.

Follow Mars through Pluto across years or decades with sampled longitude curves and export.

Find the lunar-year animal from a Gregorian birth date in the supported range.

Find geocentric tropical sign and degree positions for a chosen date.

Compare true and mean lunar node positions across a selected date range.

Read about relocation charts and planetary map lines.

Plot rising, setting, MC, and IC lines for your birth moment on a world map.

Calculate planetary horizon bearings and explore their great-circle directions.

Compare the same birth instant at original and destination coordinates.

Search towns, confirm coordinates, and resolve historical UTC offsets for a recorded birth time.

Why coordinates and historical time zones matter to a chart.

Save and reuse birth details for chart calculations.

Explore 20 sourced chart examples with explicit birth-time uncertainty.

Check birth-data sources, unknown hours, and calculation methods before interpreting a public chart.