porphyry-seven-day-phase-proximity-1.0.0 is a deterministic comparison layer over swiss-atmospheric-visibility-1.0.0 and swiss-planetary-stations-1.0.0. It performs no new astronomical search and never changes the preserved source events.

Applicability and inputs

• Targets are Mercury, Venus, Mars, Jupiter, and Saturn.
• The Sun and Moon return not-applicable.
• A complete appearance lane requires prior and next modeled events plus finite nonnegative day distances.
• A complete station lane requires prior and next exact roots plus finite nonnegative day distances.

Selection and ordering

Every complete-lane event with an absolute distance no greater than seven days is retained. Seven days is inclusive to floating-point tolerance. Results are sorted by distance, temporal direction, source lane, and event type so the same frozen inputs always produce the same ledger.

Status contract

• within-window: at least one known source event qualifies, even when the other lane is unavailable.
• outside-window: no event qualifies and both source chronologies are complete.
• indeterminate: no event qualifies and at least one chronology is incomplete.
• not-applicable: Sun or Moon.

Regression boundaries

• Exactly 7.000000 days is retained as the inclusive endpoint.
• An event at 7.000001 days is excluded.
• Appearance and station events never lose their source identity.
• A known qualifying event is retained when the other chronology is unavailable.
• Missing chronology never becomes an outside-window result.