{"id": "c585", "title": "C585 — Execute the local Tishri/Nisan phase rule", "filename": "C585.md", "role": "Research action", "step": 585, "sha256": "ac60ed03deb1aed8f1b7ce575c39f5ebf4405c332b0fc0e45af16644ad83f820", "bytes": 1146, "origins": ["C480–C1634/Research_Cycles/C0532_C0631/journal.json#C585"], "download": "/sources/ac60ed03deb1aed8f1b7ce575c39f5ebf4405c332b0fc0e45af16644ad83f820.md", "format": "md", "derived": true, "tags": ["Calendar Keys"], "excerpt": "Can one half-year coordinate convention reproduce the source examples?", "content": "# C585 — Execute the local Tishri/Nisan phase rule\n\n## Question\n\nCan one half-year coordinate convention reproduce the source examples?\n\n## Inputs\n\n```json\n{\n  \"n\": \"Y\",\n  \"t\": \"Y−1/2\",\n  \"examples\": [\n    [\n      1450,\n      1446\n    ],\n    [\n      970,\n      966\n    ]\n  ]\n}\n```\n\n## Sources\n\n```json\n[\n  \"File12 §§6.1–6.3; File63 phase controls\"\n]\n```\n\n## Opened utc\n\n2026-09-28T00:20:19.943001+00:00\n\n## Results\n\n```json\n{\n  \"phase_spans_years\": [\n    \"7/2\",\n    3,\n    \"7/2\"\n  ],\n  \"separate_units\": [\n    \"0.5-year calendar phase\",\n    \"3.5-year Aaron/Moses offset\",\n    \"3.5-day liturgical projection\"\n  ]\n}\n```\n\n## Finding\n\nThe local rule t(Y)=Y−0.5 reproduces3.5,3 and3.5-year examples. Equal printed magnitudes across phase offsets and liturgical days do not supply a unit conversion.\n\n## Reassessment\n\nReduce calendar comparisons to a common normalized measure.\n\n## Checks\n\n```json\n{\n  \"examples\": true\n}\n```\n\n## Closed utc\n\n2026-09-28T00:20:19.943344+00:00\n\n## Record provenance\n\nExact record hash: `40910aff11dc7f25c0243d36c65c1bc2623121ef0d282ab407be385cb8dd4c08`\n\nSource journal: `Research_Cycles/C0532_C0631/journal.json`", "journalDownload": "/sources/7a2e1117efc741218b68e2db8bb20eadd33cab34e00384e9b903708031da1d2d.json", "evidenceLinks": [{"id": "d-180803601a2db301", "title": "File 63"}, {"id": "d-9a1eff41920cd0f8", "title": "File 12"}]}