Contextual Lab · calendar model, not a second dossier

Passover & Crucifixion Calendar Lab

Change the surviving 30 CE / 33 CE reconstruction and inspect how civil dates, Passion events, and the Friday–Saturday–Sunday sequence move together. The historical argument is canonical in the Dating the Crucifixion Research Thread.

Canonical split: use the Research Thread for the evidence argument; use this lab to manipulate the date model and Passion sequence.

Displayed reconstructionCompare 30 and 33 CE

Model comparison

Two surviving Friday reconstructions

The lab uses proleptic Gregorian civil dates while preserving the same astronomical instants used in older Julian-calendar literature.

Favored reconstruction

Friday, 1 April 33 CE

Jewish date
Nisan 14 in the standard reconstruction
Julian equivalent
Friday, 3 April 33 CE
Burial
Before sunset Friday, 1 April
Sabbath
Saturday, 2 April
First day
Sunday, 3 April

Fits the longer Johannine public-ministry reconstruction more naturally. The same civil day also carries a real partial lunar eclipse later in the evening.

Principal alternative

Friday, 5 April 30 CE

Jewish date
Nisan 14 in the standard reconstruction
Julian equivalent
Friday, 7 April 30 CE
Burial
Before sunset Friday, 5 April
Sabbath
Saturday, 6 April
First day
Sunday, 7 April

Remains calendrically viable under a compressed public-ministry reconstruction.

Pilate-year filter

Candidate years, 26–36 CE

This is a model table, not an archived first-century Jerusalem calendar.

YearReconstructed Nisan 14Friday?Assessment
26 CESunday, 19 AprilNoFails Friday premise.
27 CEThursday, 8 April; possible one-day observation shiftEdgeNormally too early for ministry boundary.
28 CETuesday, 28 MarchNoFails Friday premise.
29 CEMonday, 16 AprilNoFails Friday premise.
30 CEFriday, 5 AprilYesSurvives; principal alternative.
31 CETuesday, 25 MarchNoFails Friday premise.
32 CESunday, 11 AprilNoFails Friday premise.
33 CEFriday, 1 AprilYesSurvives; favored reconstruction.
34 CEWednesday, 22 MarchExceptionalRequires additional calendar assumptions.
35 CETuesday, 10 AprilNoFails Friday premise.
36 CESaturday, 29 MarchNoFails Friday premise.

33 CE astronomy audit

What the eclipse does—and does not—add

The astronomical event is certain; its historical and theological interpretation is not.

Calculated event

Partial lunar eclipse · 1 April 33 CE Gregorian

The same event is catalogued as 3 April 33 CE in the Julian calendar used by NASA and much of the crucifixion literature. NASA gives an umbral magnitude of 0.5764. This makes the eclipse a genuine coincidence with the 33 CE calendar candidate, not the reason that candidate exists.

NASA Five Millennium lunar-eclipse catalogue ↗

Interpretive caution

Acts 2:20 is not an eclipse timestamp

Humphreys and Waddington connect the eclipse with Peter's quotation of Joel, but Acts 2 is itself scriptural quotation rather than a direct report that observers saw an eclipsed Moon. Bradley Schaefer's glare analysis further argues that this partial eclipse would not have appeared blood-red because of the eclipse itself.

Schaefer, Glare and Celestial Visibility ↗

Physical exclusion

The midday darkness was not a normal solar eclipse

Passover falls near full Moon. Solar eclipses require new Moon. Therefore the Synoptic darkness from roughly noon to 3 p.m. cannot be explained by an ordinary solar eclipse if the Passover chronology is retained.

NASA solar-eclipse catalogue methodology ↗

Interactive Passion sequence

Final meal → burial → Sabbath → empty tomb

Ancient hour labels remain approximate.

Inclusive counting check

Friday is day 1; Saturday day 2; Sunday day 3

The lab does not require three complete modern 24-hour periods.

Day 1

Friday

Death and burial before sunset.

Day 2

Saturday

Weekly Sabbath.

Day 3

Sunday

First day of week; tomb found empty.