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Benchmarks
Checked against the sky. And the books.
0
observed sky events
0.00″
worst cusp error
0
core layers, each with an oracle
0
printed values matched
0
findings on the board
0
still open
[ 01 / 04 ]·The claim
Two measured, one refused
Two measured. One never asked.
Great ConjunctionJupiter to Saturn0.037°2020-12-21
Sky
Does the astronomy match?
6 observed events, each with a published timestamp.
the page prints
10y 9m 18d
reading
the engine gives
· · ·
Books
Does it compute what the books say?
The value on the page, and ours.
skyenginereadingoutcome
Not measured
Did a reading come true?
The measurement stops at the reading.
[ 02 / 04 ]·The core
Dependency order
Eleven layers. Each has an oracle.
Julian dayMeeus, Astronomical Algorithms, example 7.aExact
Delta TPublished historical values, 1900 to 2020· · ·
Nutation and obliquityIAU 1980 against Meeus example 22.a, and the Placidus condition· · ·
Planets, VSOP875 observed sky events with published timestamps· · ·
Moon, ELP2000The total solar eclipse of 2017-08-21· · ·
Ayanamsa, KP Old4 published Reader I table rows and 2 corpus values· · ·
Ayanamsa, KP New2 published values· · ·
Placidus house cuspsTheir own defining equation, re-derived independently at 6 latitudes· · ·
The 249-sub table2 corpus arcs, printed to the second· · ·
Sub-sub lords, 2,241 spans1 printed arc, 1 printed four-level chain in a second book, and the tiling invariant· · ·
Vimshottari dasha balance2 worked derivations and a 9-row ready reckoner, Reader 1· · ·
0of 11 hold
[ 03 / 04 ]·Ground truth
2000 to 2020
Six events. Each pins two bodies.
Against the bound
Inside the line, six times.
Distance from the exact configuration, against what the test allows.
Great Conjunction2020-12-210.037°of 0.2°
Venus transit2012-06-060.043°of 0.15°
Mercury transit2019-11-110.065°of 0.15°
Mars opposition2020-10-130.07°of 0.2°
Solar eclipse2017-08-210.035°of 0.15°
Vernal equinox2000-03-200.0002°of 0.01°
exactdistance from the configurationthe bound
As observed
Observed, then recomputed.
Timestamps the code cannot have influenced.
Great ConjunctionJupiter to Saturn0.037°2020-12-21
No observation
The cusps, against their own equation.
6 places, both hemispheres, the equator, and Reykjavik at 64°. Worst case 0.16″.
0.16″worst, over 6 latitudes0 of 6 hold
[ 04 / 04 ]·The audit
The board
Question. Research. Finding.
0corpus pages readpages0findings raisedfindings0questions askedquestions0search keywordskeywords0research reportsreports0findings fixedfixed
Not verified yet6
Open9
Partly fixed3
Fixed70
Nothing still open blocks a reading. Last re-derived by hand on 2026-09-10, re-checked on every change.
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Check it. Then build on it.
Every response carries the rule and the page. 300 calls a month, free.