FA-18769 / Time representation / Member archive

Twenty-four-hour label permits nonzero seconds or fraction · case 04

The decoded time state disagrees with the explicit regression oracle for end_valid.

Member previewVariant 4 · 3 implementations · 16 checks per implementation

Case contract

Controlled local date index plus clock label permits ordinary 00:00:00 through 23:59:59, or exact 24:00:00 with zero fractional milliseconds only. Normalize 24:00 to following day 00:00, retaining end-of-day provenance for roundtrip. Date index is an abstract signed day, not Gregorian arithmetic. Return admission, normalized tuple, original-day provenance and total millisecond coordinate.

Why this case matters

Clock transfer and timestamp consumers require preserved coordinate, phase, validity and elapsed-time semantics.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
fixture 5	`[true, [11, 0, 0, 1, 0], 10, 950401000]`	`[false, null, null, null]`	Failed

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