Zone Tools
Browse all available zone tools.
Available tools
- Time Zone Local Ambiguity Classifier Supplied synthetic civil-second offset observations only, no IANA database, DST rule inference or leap seconds; classify supplied local candidates without claiming missing evidence proves a real civil-clock gap; repeated/overlapping observations remain ambiguous.
- Time Zone Local Candidate Policy Selector Supplied synthetic civil-second offset observations only, no IANA database, DST rule inference or leap seconds; choose earliest/latest UTC candidate or unique-only under an explicit policy; empty or unresolved evidence returns null.
- Time Zone Local Event Order Witness Supplied synthetic civil-second offset observations only, no IANA database, DST rule inference or leap seconds; retain UTC versus local-coordinate order witnesses from paired event offsets; no reordering or claim that fold observations are corrupt.
- Time Zone Local UTC Candidate List Supplied synthetic civil-second offset observations only, no IANA database, DST rule inference or leap seconds; enumerate every offset-span UTC solution for a supplied local-second coordinate, retaining duplicates and overlapping evidence.
- Time Zone Local Window UTC Span List Supplied synthetic civil-second offset observations only, no IANA database, DST rule inference or leap seconds; invert a local half-open window against every observed offset span, preserving multiple UTC solutions and source span indexes.
- Time Zone Offset Effective Span Table Supplied synthetic civil-second offset observations only, no IANA database, DST rule inference or leap seconds; derive bounded half-open UTC effective spans from a complete ordered transition chain, clipping to explicit UTC endpoints.
- Time Zone Offset Span Adjacent Compactor Supplied synthetic civil-second offset observations only, no IANA database, DST rule inference or leap seconds; compact only adjacent ordered touching spans with exactly equal offsets, rejecting reversed/overlapping input rather than hiding conflicts.
- Time Zone Offset Span Coverage Gaps Supplied synthetic civil-second offset observations only, no IANA database, DST rule inference or leap seconds; audit uncovered portions of a finite UTC window after unioning all supplied coverage regardless of offsets; not a claim of timezone rule completeness.
- Time Zone Offset Span Overlap Conflicts Supplied synthetic civil-second offset observations only, no IANA database, DST rule inference or leap seconds; report every positive-length UTC span overlap with unequal offset evidence; touching or identical offsets are not conflicts.
- Time Zone Offset State at Instant Supplied synthetic civil-second offset observations only, no IANA database, DST rule inference or leap seconds; lookup explicit offset state at an instant, transitions effective inclusively and initial offset valid before the first.
- Time Zone Offset Transition Record Audit Supplied synthetic civil-second offset observations only, no IANA database, DST rule inference or leap seconds; audit transition chronological order, duplicate instants and adjacent before/after offset continuity without sorting or repairing.
- Time Zone Pair Offset Difference Table Supplied synthetic civil-second offset observations only, no IANA database, DST rule inference or leap seconds; compare simultaneous supplied zone-span offsets only on explicit UTC intersections, preserving signed right-minus-left and every overlap occurrence.
- Time Zone Transition Calendar Marker Table Supplied synthetic civil-second offset observations only, no IANA database, DST rule inference or leap seconds; produce numeric transition calendar marker coordinates on both sides of each jump; no actual Gregorian dates or formatting implied.
- Time Zone Transition Local Fold Span Supplied synthetic civil-second offset observations only, no IANA database, DST rule inference or leap seconds; derive a single transition’s local fold for a negative jump as a half-open interval; other jump signs return null.
- Time Zone Transition Local Gap Span Supplied synthetic civil-second offset observations only, no IANA database, DST rule inference or leap seconds; derive a single transition’s local gap for a positive jump as a half-open interval; other jump signs return null.
- Time Zone Transition Window Selector Supplied synthetic civil-second offset observations only, no IANA database, DST rule inference or leap seconds; select transition occurrence records inside a half-open UTC window without sorting or deduplicating.
- Time Zone UTC Span Local Split Supplied synthetic civil-second offset observations only, no IANA database, DST rule inference or leap seconds; intersect UTC windows with every supplied offset span and map each piece independently into local coordinates; gaps/overlaps are not concealed.