Research note · Dataset schema v2

Birth Chart Accuracy Test Set

Name: Birth Chart Accuracy Test Set
Creator: Charting Stars
Published: 2026-10-07

This build's natal engine at audited source times, time standards, and rounded source coordinates. The cited checks score published longitudes and signs. 10 captured JPL Horizons longitude comparisons are scored separately at the same assumed historical UT1 instants. Inspect inputs, targets, thresholds, deltas, and quarantines.

JSON data CSV data

Current output is recalculated from this build. Unlisted positions carry no external-reference claim.

Reference coverageOne mark per sourced check; blanks are not failures.

Albert Einstein6/6
Martin Luther King Jr.2/2
David Bowie3/3
John F. Kennedy3/3
Frida Kahlo3/3
Carl Sagan2/2
Marie Curie2/2

7public fixtures

21external checks

10independent JPL comparisons

21 / 21passing in this build

Public natal fixtures are not a Moon-sign catalog. The Moon sign catalog lists natal-Moon interiors by sign — not these VSOP87 longitudes versus linked targets. The zodiac sign encyclopedia is tropical personality traits, not this scored natal-fixture table.

A linked-target table is not a calculation write-up. How Charting Stars calculates birth charts is the IANA timezone and Lahiri/Vimshottari engine steps — not these VSOP87 longitudes versus linked targets. Einstein's birth chart in Hellenistic, Vedic, and BaZi is Ulm 1879 in three traditions, not this named-source delta table.

Linked-target natal fixtures are not a 2026 sky calendar. The 2026 Mercury retrograde calendar lists station and shadow windows — not these named-source longitude checks. The 2026 eclipse calendar is four dated solar and lunar maxima, not this public fixture suite.

01 · Independent longitude verification

This build vs captured JPL Horizons longitudes

10 / 10 independent comparisons pass. Pass and Δ use the captured JPL number with a 0.05° internal threshold. These apparent ecliptic-of-date calculations do not verify the birth record; frame and historical timescale assumptions remain explicit in the downloads.

Current engine longitudes against captured JPL Horizons targets at source-aligned historical UT1 instants
Fixture	Body	Captured JPL target	This build	Δ / threshold	JPL Horizons	Result
Albert Einstein	Sun longitude	353.508°	353.507°	Δ 0.000° / 0.050°	JPL Horizons captured independent calculation 1879-03-14T10:50:00Z · retrieved 2026-10-07Captured response ↓	Pass
Albert Einstein	Moon longitude	254.526°	254.521°	Δ 0.004° / 0.050°	JPL Horizons captured independent calculation 1879-03-14T10:50:00Z · retrieved 2026-10-07Captured response ↓	Pass
Albert Einstein	Uranus longitude	151.288°	151.279°	Δ 0.009° / 0.050°	JPL Horizons captured independent calculation 1879-03-14T10:50:00Z · retrieved 2026-10-07Captured response ↓	Pass
Albert Einstein	Neptune longitude	37.872°	37.871°	Δ 0.000° / 0.050°	JPL Horizons captured independent calculation 1879-03-14T10:50:00Z · retrieved 2026-10-07Captured response ↓	Pass
Martin Luther King Jr.	Sun longitude	295.134°	295.134°	Δ 0.000° / 0.050°	JPL Horizons captured independent calculation 1929-01-15T18:00:00Z · retrieved 2026-10-07Captured response ↓	Pass
David Bowie	Sun longitude	287.246°	287.245°	Δ 0.000° / 0.050°	JPL Horizons captured independent calculation 1947-01-08T09:00:00Z · retrieved 2026-10-07Captured response ↓	Pass
John F. Kennedy	Sun longitude	67.843°	67.843°	Δ 0.000° / 0.050°	JPL Horizons captured independent calculation 1917-05-29T20:00:00Z · retrieved 2026-10-07Captured response ↓	Pass
Frida Kahlo	Sun longitude	103.376°	103.375°	Δ 0.000° / 0.050°	JPL Horizons captured independent calculation 1907-07-06T15:06:40Z · retrieved 2026-10-07Captured response ↓	Pass
Carl Sagan	Sun longitude	226.827°	226.827°	Δ 0.000° / 0.050°	JPL Horizons captured independent calculation 1934-11-09T22:05:00Z · retrieved 2026-10-07Captured response ↓	Pass
Marie Curie	Sun longitude	224.576°	224.575°	Δ 0.000° / 0.050°	JPL Horizons captured independent calculation 1867-11-07T10:36:00Z · retrieved 2026-10-07Captured response ↓	Pass

Cite-ready questions

What this set can answer

Quote-ready claims. Live longitudes, targets, and deltas are in the tables on this page; downloads carry release birth-chart-accuracy-2026-10-07-v2.

FAQ

How does Charting Stars test birth-chart accuracy?

https://chartingstars.com/research/birth-chart-accuracy publishes 7 source-aligned natal fixtures (Einstein, King, Bowie, Kennedy, Kahlo, Sagan, Curie) with 21 linked external checks. This build recalculates each chart at the cited time standard and rounded source coordinates. Two incompatible Astro-Charts targets are quarantined and excluded from passing totals.

What is the JPL Horizons link on this page?

10 separate independent longitude checks use actual captured JPL Horizons values: Einstein's Sun, Moon, Uranus, and Neptune, plus the Sun for the other six fixtures. Their pass and delta use those captured numbers at the source-aligned historical UT1 instants with a 0.05 degree Charting Stars threshold. Downloads retain parameters, retrieval times, and raw-response hashes. JPL does not verify the birth record.

What does Pass or Fail mean here?

A cited-check pass matches a sourced sign or falls inside the Charting Stars internal circular threshold of a published longitude. A separate JPL pass compares the unrounded engine result to a captured apparent geocentric ecliptic-of-date longitude within 0.05 degree. The cited source does not own either threshold. Quarantined and regression-only values are excluded; unlisted positions carry no external claim.

Can I download the birth-chart fixtures?

Yes. JSON and CSV are free, no account required, at https://chartingstars.com/research/birth-chart-accuracy/data.json and https://chartingstars.com/research/birth-chart-accuracy/data.csv. Cite the reader, release birth-chart-accuracy-2026-10-07-v2, schema v2, and your access date. Keep each row's source, comparison class, and caveats with any specific check.

02 · Fixture register

Seven records, shown without substitution

The calculator uses the cited time standard and rounded coordinates. Legacy regression inputs remain available under each record.

Summary of all seven birth-chart calculation fixtures
Fixture and source	Calculation input	Current chart	Cited checks	Known caveat
Albert Einstein Astro-Databank	1879-03-14 · 11:30LMT (UTC+00:40:00)Ulm, Germany	Sun PiscesMoon SagittariusRising CancerASC 101.644° · MC 342.839°	6/6 pass3° · 3 sign	Source caveatThe source coordinates are rounded place coordinates, not a verified birth-building location. Decimal conversion does not add geographic precision. The cited local clock and explicit source offset determine the public test instant. All seven births predate UTC; the ISO Z timestamp serializes an assumed historical UT1 instant, without modeling uncertainty in the recorded clock or UT1 reconstruction. The source's 10e00 LMT gives exactly +00:40:00; the regression retains its more precise implementation longitude and resulting +00:39:57. The Astro-Charts outer-planet comparisons are quarantined for a different time assumption.
Martin Luther King Jr.Astro-Databank	1929-01-15 · 12:00CST (UTC-06:00)Atlanta, Georgia, USA	Sun CapricornMoon PiscesRising TaurusASC 43.810° · MC 298.207°	2/2 pass1° · 1 sign	Source caveatThe source coordinates are rounded place coordinates, not a verified birth-building location. Decimal conversion does not add geographic precision. The cited local clock and explicit source offset determine the public test instant. All seven births predate UTC; the ISO Z timestamp serializes an assumed historical UT1 instant, without modeling uncertainty in the recorded clock or UT1 reconstruction. The source describes an approximate noon birth. This test adopts that source clock and CST (-06:00), rather than the frozen regression's America/New_York EST (-05:00); no precise birth-angle claim is made.
David Bowie Astro-Databank	1947-01-08 · 09:00GMT (UTC+00:00)Brixton, London, England	Sun CapricornMoon LeoRising AquariusASC 303.405° · MC 243.969°	3/3 pass1° · 2 sign	Source caveatThe source coordinates are rounded place coordinates, not a verified birth-building location. Decimal conversion does not add geographic precision. The cited local clock and explicit source offset determine the public test instant. All seven births predate UTC; the ISO Z timestamp serializes an assumed historical UT1 instant, without modeling uncertainty in the recorded clock or UT1 reconstruction. The linked record presents 09:00 and Rodden A, and documents competing birth times. This selected source record is tested; the regression's AA rating is retained only as legacy metadata.
John F. Kennedy Astro-Databank	1917-05-29 · 15:00EST (UTC-05:00)Brookline, Massachusetts, USA	Sun GeminiMoon VirgoRising LibraASC 199.998° · MC 113.777°	3/3 pass1° · 2 sign	Source caveatThe source coordinates are rounded place coordinates, not a verified birth-building location. Decimal conversion does not add geographic precision. The cited local clock and explicit source offset determine the public test instant. All seven births predate UTC; the ISO Z timestamp serializes an assumed historical UT1 instant, without modeling uncertainty in the recorded clock or UT1 reconstruction. The linked birth record reports Rodden A; the frozen regression's AA rating is legacy metadata and is not source-substantiated.
Frida Kahlo Astro-Databank	1907-07-06 · 08:30LMT at 99w10 (UTC-06:36:40)Coyoacan, Mexico	Sun CancerMoon TaurusRising LeoASC 143.517° · MC 53.338°	3/3 pass1° · 2 sign	Source caveatThe source coordinates are rounded place coordinates, not a verified birth-building location. Decimal conversion does not add geographic precision. The cited local clock and explicit source offset determine the public test instant. All seven births predate UTC; the ISO Z timestamp serializes an assumed historical UT1 instant, without modeling uncertainty in the recorded clock or UT1 reconstruction. The public LMT conversion uses the cited 99w10 and -06:36:40 exactly. The frozen regression's implementation coordinates and LMT second remain unchanged.
Carl Sagan Astro-Databank	1934-11-09 · 17:05EST (UTC-05:00)New York, New York, USA	Sun ScorpioMoon SagittariusRising TaurusASC 55.316° · MC 303.330°	2/2 pass1° · 1 sign	Source caveatThe source coordinates are rounded place coordinates, not a verified birth-building location. Decimal conversion does not add geographic precision. The cited local clock and explicit source offset determine the public test instant. All seven births predate UTC; the ISO Z timestamp serializes an assumed historical UT1 instant, without modeling uncertainty in the recorded clock or UT1 reconstruction. The public comparison uses the cited 17:05 New York record, rather than the frozen regression's 05:05 Brooklyn inputs. Its current output is a separate audit cast and does not rebaseline the production engine.
Marie Curie Astro-Databank	1867-11-07 · 12:00LMT at 21e00 (UTC+01:24:00)Warsaw, Poland	Sun ScorpioMoon PiscesRising CapricornASC 282.028° · MC 228.622°	2/2 pass1° · 1 sign	Source caveatThe source coordinates are rounded place coordinates, not a verified birth-building location. Decimal conversion does not add geographic precision. The cited local clock and explicit source offset determine the public test instant. All seven births predate UTC; the ISO Z timestamp serializes an assumed historical UT1 instant, without modeling uncertainty in the recorded clock or UT1 reconstruction. The source reports Rodden AA, while the frozen regression retains A. The public LMT conversion uses the cited 21e00 and +01:24:00; the old implementation's +01:24:03 is regression-only.

03 · Reference results

Targets, deltas, internal thresholds, and sources

Longitude checks use circular angular distance against a Charting Stars internal threshold. Sign checks compare the sourced sign only.

Public fixture

Albert Einstein

6/6 cited checks passSource-reported Rodden rating AA

Source-aligned calculation input

1879-03-14 at 11:30 · LMT (UTC+00:40:00)

Ulm, Germany

1879-03-14T10:50:00Z · historical UT1 assumption

48.4, 10

Linked source record

1879-03-14 at 11:30 · LMT (UTC+00:40:00)

Ulm, Germany

Open Astro-Databank

Regression-only metadata · excluded from public scoring

Frozen internal regression metadata, not source evidence. No regression baseline or production chart behavior is changed by the public audit cast.

1879-03-14 at 11:30 · Europe/Berlin · Ulm, Germany · stored rating AA

External targets and signs, with longitude targets evaluated against Charting Stars internal acceptance thresholds, for Albert Einstein
Check	External target	Current build	Evaluation	Reference source	Result
Sun longitude	353.500°	353.507°	Δ 0.008° / internal threshold 1.500°	Astro-Databank Published as 23 degrees 30 minutes Pisces.	Pass
Moon longitude	254.533°	254.521°	Δ 0.011° / internal threshold 3.000°	Astro-Databank Published as 14 degrees 32 minutes Sagittarius.	Pass
Ascendant longitude	101.650°	101.644°	Δ 0.005° / internal threshold 4.000°	Astro-Databank Published as 11 degrees 39 minutes Cancer.	Pass
Sun sign	Pisces	Pisces	Exact sourced sign	Astro-Databank	Pass
Moon sign	Sagittarius	Sagittarius	Exact sourced sign	Astro-Databank	Pass
Rising sign	Cancer	Cancer	Exact sourced sign	Astro-Databank	Pass

Inspect all externally referenced positions3 positions

Ascendant 101.644°

Current calculated values for externally referenced positions for Albert Einstein
Body or point	Ecliptic longitude	Sign	Motion
Sun	353.507°	Pisces	Direct
Moon	254.521°	Sagittarius	Direct

Public fixture

Martin Luther King Jr.

2/2 cited checks passSource-reported Rodden rating A

Source-aligned calculation input

1929-01-15 at 12:00 · CST (UTC-06:00)

Atlanta, Georgia, USA

1929-01-15T18:00:00Z · historical UT1 assumption

33.75, -84.38333333333334

Linked source record

1929-01-15 at 12:00 (about noon) · CST (UTC-06:00)

Atlanta, Georgia, USA

Open Astro-Databank

Regression-only metadata · excluded from public scoring

Frozen internal regression metadata, not source evidence. No regression baseline or production chart behavior is changed by the public audit cast.

1929-01-15 at 12:00 · America/New_York · Atlanta, GA, USA · stored rating A

External targets and signs, with longitude targets evaluated against Charting Stars internal acceptance thresholds, for Martin Luther King Jr.
Check	External target	Current build	Evaluation	Reference source	Result
Sun longitude	295.133°	295.134°	Δ 0.001° / internal threshold 1.500°	Astro-Databank Published as 25 degrees 08 minutes Capricorn.	Pass
Sun sign	Capricorn	Capricorn	Exact sourced sign	Astro-Databank	Pass

Inspect all externally referenced positions1 positions

Current calculated values for externally referenced positions for Martin Luther King Jr.
Body or point	Ecliptic longitude	Sign	Motion
Sun	295.134°	Capricorn	Direct

Public fixture

David Bowie

3/3 cited checks passSource-reported Rodden rating A

Source-aligned calculation input

1947-01-08 at 09:00 · GMT (UTC+00:00)

Brixton, London, England

1947-01-08T09:00:00Z · historical UT1 assumption

51.483333333333334, -0.1

Linked source record

1947-01-08 at 09:00 · GMT (UTC+00:00)

Brixton, London, England

Open Astro-Databank

Regression-only metadata · excluded from public scoring

Frozen internal regression metadata, not source evidence. No regression baseline or production chart behavior is changed by the public audit cast.

1947-01-08 at 09:00 · Europe/London · Brixton, London, UK · stored rating AA

External targets and signs, with longitude targets evaluated against Charting Stars internal acceptance thresholds, for David Bowie
Check	External target	Current build	Evaluation	Reference source	Result
Sun longitude	287.250°	287.245°	Δ 0.005° / internal threshold 1.500°	Astro-Databank Published as 17 degrees 15 minutes Capricorn.	Pass
Sun sign	Capricorn	Capricorn	Exact sourced sign	Astro-Databank	Pass
Rising sign	Aquarius	Aquarius	Exact sourced sign	Astro-Databank	Pass

Inspect all externally referenced positions2 positions

Ascendant 303.405°

Current calculated values for externally referenced positions for David Bowie
Body or point	Ecliptic longitude	Sign	Motion
Sun	287.245°	Capricorn	Direct

Public fixture

John F. Kennedy

3/3 cited checks passSource-reported Rodden rating A

Source-aligned calculation input

1917-05-29 at 15:00 · EST (UTC-05:00)

Brookline, Massachusetts, USA

1917-05-29T20:00:00Z · historical UT1 assumption

42.333333333333336, -71.11666666666666

Linked source record

1917-05-29 at 15:00 · EST (UTC-05:00)

Brookline, Massachusetts, USA

Open Astro-Databank

Regression-only metadata · excluded from public scoring

Frozen internal regression metadata, not source evidence. No regression baseline or production chart behavior is changed by the public audit cast.

1917-05-29 at 15:00 · America/New_York · Brookline, MA, USA · stored rating AA

External targets and signs, with longitude targets evaluated against Charting Stars internal acceptance thresholds, for John F. Kennedy
Check	External target	Current build	Evaluation	Reference source	Result
Sun longitude	67.850°	67.843°	Δ 0.007° / internal threshold 1.500°	Astro-Databank Published as 7 degrees 51 minutes Gemini.	Pass
Sun sign	Gemini	Gemini	Exact sourced sign	Astro-Databank	Pass
Rising sign	Libra	Libra	Exact sourced sign	Astro-Databank	Pass

Inspect all externally referenced positions2 positions

Ascendant 199.998°

Current calculated values for externally referenced positions for John F. Kennedy
Body or point	Ecliptic longitude	Sign	Motion
Sun	67.843°	Gemini	Direct

Public fixture

Frida Kahlo

3/3 cited checks passSource-reported Rodden rating AA

Source-aligned calculation input

1907-07-06 at 08:30 · LMT at 99w10 (UTC-06:36:40)

Coyoacan, Mexico

1907-07-06T15:06:40Z · historical UT1 assumption

19.333333333333332, -99.16666666666667

Linked source record

1907-07-06 at 08:30 · LMT at 99w10 (UTC-06:36:40)

Coyoacan, Mexico

Open Astro-Databank

Regression-only metadata · excluded from public scoring

Frozen internal regression metadata, not source evidence. No regression baseline or production chart behavior is changed by the public audit cast.

1907-07-06 at 08:30 · America/Mexico_City · Coyoacán, Mexico City, Mexico · stored rating AA

External targets and signs, with longitude targets evaluated against Charting Stars internal acceptance thresholds, for Frida Kahlo
Check	External target	Current build	Evaluation	Reference source	Result
Sun longitude	103.383°	103.375°	Δ 0.008° / internal threshold 1.500°	Astro-Databank Published as 13 degrees 23 minutes Cancer.	Pass
Sun sign	Cancer	Cancer	Exact sourced sign	Astro-Databank	Pass
Rising sign	Leo	Leo	Exact sourced sign	Astro-Databank	Pass

Inspect all externally referenced positions2 positions

Ascendant 143.517°

Current calculated values for externally referenced positions for Frida Kahlo
Body or point	Ecliptic longitude	Sign	Motion
Sun	103.375°	Cancer	Direct

Public fixture

Carl Sagan

2/2 cited checks passSource-reported Rodden rating AA

Source-aligned calculation input

1934-11-09 at 17:05 · EST (UTC-05:00)

New York, New York, USA

1934-11-09T22:05:00Z · historical UT1 assumption

40.71666666666667, -74

Linked source record

1934-11-09 at 17:05 · EST (UTC-05:00)

New York, New York, USA

Open Astro-Databank

Regression-only metadata · excluded from public scoring

Frozen internal regression metadata, not source evidence. No regression baseline or production chart behavior is changed by the public audit cast.

1934-11-09 at 05:05 · America/New_York · Brooklyn, NY, USA · stored rating AA

External targets and signs, with longitude targets evaluated against Charting Stars internal acceptance thresholds, for Carl Sagan
Check	External target	Current build	Evaluation	Reference source	Result
Sun longitude	226.833°	226.827°	Δ 0.006° / internal threshold 1.500°	Astro-Databank Published as 16 degrees 50 minutes Scorpio.	Pass
Sun sign	Scorpio	Scorpio	Exact sourced sign	Astro-Databank	Pass

Inspect all externally referenced positions1 positions

Current calculated values for externally referenced positions for Carl Sagan
Body or point	Ecliptic longitude	Sign	Motion
Sun	226.827°	Scorpio	Direct

Public fixture

Marie Curie

2/2 cited checks passSource-reported Rodden rating AA

Source-aligned calculation input

1867-11-07 at 12:00 · LMT at 21e00 (UTC+01:24:00)

Warsaw, Poland

1867-11-07T10:36:00Z · historical UT1 assumption

52.25, 21

Linked source record

1867-11-07 at 12:00 · LMT at 21e00 (UTC+01:24:00)

Warsaw, Poland

Open Astro-Databank

Regression-only metadata · excluded from public scoring

Frozen internal regression metadata, not source evidence. No regression baseline or production chart behavior is changed by the public audit cast.

1867-11-07 at 12:00 · Europe/Warsaw · Warsaw, Poland · stored rating A

External targets and signs, with longitude targets evaluated against Charting Stars internal acceptance thresholds, for Marie Curie
Check	External target	Current build	Evaluation	Reference source	Result
Sun longitude	224.583°	224.575°	Δ 0.008° / internal threshold 1.500°	Astro-Databank Published as 14 degrees 35 minutes Scorpio.	Pass
Sun sign	Scorpio	Scorpio	Exact sourced sign	Astro-Databank	Pass

Inspect all externally referenced positions1 positions

Current calculated values for externally referenced positions for Marie Curie
Body or point	Ecliptic longitude	Sign	Motion
Sun	224.575°	Scorpio	Direct

04 · Method and limits

What this set can and cannot say

Schema v2 · birth-chart-accuracy-2026-10-07-v2 · recalculated at build time

External references

These are linked birth records, published longitudes, and sourced sign labels. References provide targets and signs; Charting Stars defines the internal acceptance thresholds retained from the engine accuracy gate. Separate independent comparisons use captured JPL values, retained response bytes and SHA-256 hashes at the same source-aligned UT1 assumptions. JPL does not verify the birth record.

Private regression snapshots

Separate high-precision snapshots detect unexplained engine drift in CI. They are not independent evidence, are not counted as external checks, and are omitted from this page and both downloads.

Pass and Fail

Pass means the raw current result falls within the Charting Stars internal circular acceptance threshold retained from the engine accuracy gate, or matches its sourced sign. The cited source does not provide or own that threshold. Fail means that one comparison falls outside the rule. Displayed values are rounded or quantized; evaluation uses unrounded values.

Downloads

JSON preserves the nested public projection. CSV labels cited, independent, and quarantined comparisons separately, together with source inputs and regression-only metadata. Both formats are deterministic UTF-8 schema v2 representations of the same build output. Each saved file carries release ID birth-chart-accuracy-2026-10-07-v2.

Dataset-wide caveats

External references supply degree-minute longitude targets or sign labels. Longitude pass/fail uses a Charting Stars internal acceptance threshold retained from the engine accuracy gate; it is defined by Charting Stars, not provided by the cited source.
Precise frozen regression snapshots protect the internal engine from unexplained drift. Their stored numbers are not independent evidence and are omitted from every public record.
Current longitudes are quantized downward to three decimal places for display so they stay in their raw sign interval; deltas are rounded for display. Pass or fail uses the unrounded normalized engine longitude and raw circular delta; unlisted positions carry no external claim.
Independent JPL Horizons comparisons use captured numerical quantity-31 apparent geocentric ecliptic-of-date longitudes at each audited historical UT1 instant. They are scored separately at a Charting Stars internal 0.05-degree threshold; a link alone is not scored evidence and JPL does not verify birth data.
All seven births predate UTC. utcInstant and utInstant use ISO Z notation for Date-compatible serialization of an assumed historical UT1 instant, not a claim of UTC timekeeping or a reconstructed clock uncertainty. The production engine's existing time-scale treatment is unchanged.
regressionOnlyMetadata and the deprecated fixtureRoddenRating retain frozen implementation inputs and legacy ratings, not externally supported facts; sourceReportedRoddenRating is the audited linked-source rating.
Public audit casts use explicit cited offsets and rounded source-place coordinates; no IANA timezone or more precise implementation coordinates are substituted. Quarantined comparisons have no pass/fail and do not contribute to the sourced total.

Citation policy

Cite the reader, then retain the row-level source.

Cite Birth Chart Accuracy Test Set, Charting Stars, release birth-chart-accuracy-2026-10-07-v2, schema v2, the canonical URL, and your access date. When discussing a specific check, keep its external source and caveat with the result. Do not describe an uncited current position or a private regression snapshot as externally checked.

https://chartingstars.com/research/birth-chart-accuracy

Test your own chart

Daily horoscopes Sun · Moon · Rising combinations Live VSOP87 sky now How Charting Stars calculates charts Einstein chart in three traditions Sun, Moon & Rising explained