{
  "schema_version": 1,
  "decision_id": "pancha_pakshi_1879_local_solar_context_2026_07_20",
  "decided_at_utc": "2026-07-20T14:54:31Z",
  "decision_kind": "additive_modern_local_solar_context_admission",
  "profile_id": "agastya_madras_1879_akshara_fixed_clock",
  "prior_admission": {
    "decision_id": "pancha_pakshi_1879_source_scoped_public_2026_07_20",
    "fixture_path": "pancha_pakshi_1879_public_admission_2026_07_20.json",
    "fixture_sha256": "cc091c6d6df8491526ce1425d57eba74db1ff8ead137bb0b5535764e2a0413dd",
    "hash_canonicalization": "UTF-8 text with CRLF and CR normalized to LF"
  },
  "profile_binding": {
    "path": "moira/data/pancha_pakshi_agastya_madras_1879_akshara_fixed_clock.json",
    "sha256": "876e4cc7cc5d894f5e558ac733913e84a8b779f72c77661e89d448fd1e05ced4",
    "profile_content_changed": false,
    "admission_status": "source_scoped_public",
    "default_selection_allowed": false
  },
  "manifest_transition": {
    "prior_manifest_sha256": "a0c8fe51dd7c3bbd867a85aa1099fe68657edccf558976df3ffdcd3688ba5d2c",
    "current_manifest_sha256": "4587306ded9b5760940e7f80c45b6c40132590473e910ea9350c9d7fa141a2ee",
    "hash_canonicalization": "UTF-8 text with CRLF and CR normalized to LF",
    "prior_capabilities": [
      "aksara_identity",
      "nominal_schedule",
      "directed_relationships"
    ],
    "current_capabilities": [
      "aksara_identity",
      "nominal_schedule",
      "directed_relationships",
      "astronomical_context"
    ],
    "added_capability": "astronomical_context",
    "profile_product_kind_changed": false,
    "profile_admission_status_changed": false
  },
  "computational_object": {
    "engine_function": "pancha_pakshi_local_solar_context_at",
    "facade_method": "Moira.pancha_pakshi_local_solar_context",
    "rest_route": "POST /v1/pancha-pakshi/context/local-solar",
    "result_vessel": "PanchaPakshiLocalSolarContext",
    "policy_vessel": "PanchaPakshiLocalSolarContextPolicy",
    "policy": {
      "policy_id": "local_solar_day_explicit_paksha_v1",
      "paksha_basis": "caller_supplied_source_label",
      "solar_day_basis": "topocentric_sunrise_to_next_sunrise",
      "solar_event_altitude_deg": -0.833,
      "observer_elevation_m": 0.0,
      "solar_altitude_refraction_mode": "unrefracted_signal_standard_refraction_and_semidiameter_in_threshold",
      "half_basis": "topocentric_sunrise_sunset",
      "weekday_basis": "local_mean_solar_time_at_governing_sunrise",
      "offset_materialization_status": "not_performed"
    },
    "provenance_routing_status": "local_solar_half_and_weekday_performed_paksha_caller_supplied",
    "engine_inputs": [
      "explicit_profile_id",
      "jd_ut1",
      "latitude",
      "longitude",
      "caller_supplied_paksha"
    ],
    "facade_time_input": "timezone-aware datetime normalized to UTC through the established civil-anchor to UT1 adapter",
    "rest_time_input": "timezone-aware datetime normalized to UTC through the established civil-anchor to UT1 adapter",
    "derived_values": [
      "governing_topocentric_sunrise_jd_ut1",
      "sunset_jd_ut1",
      "next_sunrise_jd_ut1",
      "day_or_night_half",
      "local_mean_solar_weekday_at_governing_sunrise",
      "existing_nominal_schedule_selected_from_supplied_paksha_derived_half_and_derived_weekday"
    ],
    "validation_surfaces": [
      "tests/unit/test_local_solar_day.py",
      "tests/unit/test_pancha_pakshi_local_solar_context.py",
      "tests/unit/test_pancha_pakshi_public_contract.py",
      "tests/unit/test_pancha_pakshi_public_facade.py",
      "tests/server/test_server_pancha_pakshi_service.py",
      "tests/server/test_server_pancha_pakshi_routes.py"
    ]
  },
  "assembly_doctrine": {
    "astronomical_layer": "The existing Moira local-solar-day resolver determines the sunrise-to-next-sunrise window, topocentric sunrise/sunset half, and local-mean-solar weekday.",
    "source_layer": "The caller supplies the 1879 profile's Purva or Amara source label; the existing source-owned nominal schedule remains unchanged.",
    "composition_rule": "Select the existing nominal schedule using caller-supplied paksha plus astronomically derived half and weekday.",
    "boundary_rule": "Day is sunrise inclusive to sunset exclusive; night is sunset inclusive to next sunrise exclusive.",
    "polar_policy": "Fail explicitly when lawful sunrise/sunset bounds do not exist.",
    "materialization_rule": "Do not convert nominal nazhigai offsets into event instants and do not claim a current schedule cell."
  },
  "authority_and_provenance": {
    "policy_origin": "modern_moira_composition_policy",
    "historical_source_attestation": "not_claimed_for_the_astronomical_composition",
    "solar_geometry": "existing configured-reader-backed topocentric -0.833 degree solar-altitude crossing",
    "time_scale": "UT1 for resolved solar-event Julian Days",
    "weekday": "local mean solar time at the governing sunrise, Sunday zero through Saturday six",
    "nominal_schedule_origin": "unchanged named 1879 source-scoped profile",
    "evidence_class": "composition invariants and regression coverage over the established local-solar boundary",
    "external_pancha_pakshi_oracle_status": "none"
  },
  "validation_evidence": {
    "evidence_class": "authority_validation",
    "validated_at_utc": "2026-07-20T15:19:19Z",
    "scope": "astronomical local-solar sunrise and sunset boundary only; does not validate the historical Pancha Pakshi doctrine",
    "authority": "JPL Horizons observer tables",
    "fixture_path": "tests/fixtures/horizons_rise_set_reference.json",
    "fixture_sha256": "d850ac06164ef041e3f9c8e80aaeea7cf23adfd644f6259b73e500510b6d5255",
    "fixture_hash_canonicalization": "UTF-8 text with CRLF and CR normalized to LF before hashing",
    "case_id": "sun-new-york-equinox",
    "comparison_semantics": "Moira topocentric -0.833 degree UT1 solar-event Julian Days against the Horizons-derived fixture's -0.8333 degree UT labels",
    "moira_solar_event_altitude_deg": -0.833,
    "authority_fixture_altitude_deg": -0.8333,
    "content_identified_kernel": "DE-0441LE-0441",
    "tolerance_seconds": 2.0,
    "observed_sunrise_error_seconds": 0.08175373077392578,
    "observed_sunset_error_seconds": 0.1232340931892395
  },
  "public_claim": "Given an explicit profile, UT1 instant, location, and caller-supplied Purva or Amara source label, resolve the governing local-solar day, day/night half, local-mean-solar weekday, and corresponding unchanged nominal 1879 schedule.",
  "public_nonclaims": [
    "astronomical or lunar inference of Purva or Amara paksha",
    "natal Moon or nakshatra identity",
    "conversion of nominal nazhigai offsets to Julian Days or datetimes",
    "a current Pancha Pakshi activity or schedule cell",
    "solar-proportional or seasonal scaling of nominal durations",
    "vinadi or finer subdivisions",
    "Padu, Bharana, or Adhikara birds",
    "condition evaluation, scoring, or electional window search",
    "cross-witness normalization or corroborated public status",
    "a universal or default Pancha Pakshi canon"
  ],
  "artifact_distribution_boundary": {
    "source_artifact_policy_changed": false,
    "profile_source_artifact_added": false,
    "policy_effect": "The standing non-bundling architecture remains unchanged; this additive modern policy requires no new source artifact or rights-clearance phase."
  }
}