C768 — Compare row rounding with date-grid rounding

Question

Can rounding already calculated dates reproduce the source chronology?

Inputs

{
  "grid_anchor": 1406
}

Sources

[
  "File51a §16.2; C754–757"
]

Opened utc

2026-09-28T01:58:17.376412+00:00

Results

{
  "diagnostic": {
    "path": "model/date_grid_diagnostic.json",
    "sha256": "ac040f2ee4e2718dc6af24e48a39d46edbff3525e3a215e0f5ab2e1a1b8bd876",
    "bytes": 2216
  },
  "mismatch_counts": {
    "MT_native_OFF": 11,
    "LXX_native_ON": 7,
    "SP_native_OFF": 17
  },
  "MT_examples": {
    "Noah": {
      "grid": 6381,
      "row": 6386
    },
    "Abraham": {
      "grid": 2436,
      "row": 2431
    }
  }
}

Finding

A nearest1/6 date-grid projection fails at11 of26 MT boundaries. Rounded chronology depends on the source path, not just the final Actual date.

Reassessment

Test subdivision dependence over an informative complete source subpath.

Checks

{
  "counts": true,
  "Noah": true
}

Closed utc

2026-09-28T01:58:17.376999+00:00

Record provenance

Exact record hash: cac6e7b1574e63f5dd512752e6bc3c640cbee44356a8c157d9de97aa79ed803a

Source journal: Research_Cycles/C0732_C0831/journal.json