# C535 — One coincidence law spans both studies

## Question

Are1566 and2926 instances of the same calendar-measure condition?

## Inputs

```json
{
  "Covenant_radii": [
    276,
    299
  ],
  "Actual_field_radii": [
    8372,
    8970
  ],
  "year_lengths": [
    336,
    360,
    364
  ]
}
```

## Sources

```json
[
  "File60 §5",
  "File52c §3.15",
  "C500,C502"
]
```

## Opened utc

2026-09-27T23:59:48.896535+00:00

## Results

```json
{
  "Covenant_radius_ratio": "13/12",
  "E_over_J": "13/12",
  "Actual_radius_ratio": "15/14",
  "E_over_P": "15/14",
  "normalized_Covenant": [
    "23/28",
    "23/28"
  ],
  "normalized_Actual": [
    "299/12",
    "299/12"
  ],
  "general_rule": "K_d(s)=K*s/d; equal outputs iff s1/d1=s2/d2"
}
```

## Finding

The13:12 Covenant pair and15:14 Actual pair express the same normalized-measure equality under different calendar lengths. This unifies their calculation while leaving the supplied radii and held anchors as separate placement facts.

## Reassessment

Trace the161 spine to the biographical equality that generates it.

## Checks

```json
{
  "Covenant": true,
  "Actual": true,
  "normalized": true
}
```

## Closed utc

2026-09-27T23:59:48.896767+00:00

## Record provenance

Exact record hash: `4a1d7235215c36b288c4bc0c183ad95bab391a6ce4e57b5620332be02e47447e`

Source journal: `Research_Cycles/C0532_C0631/journal.json`