FA-77674 / Legal deadline computation / Member archive

Court holiday calendar with observed dates: next new year · case 04

When next New Year falls on Saturday, December 31 is missing from the calendar.

Member previewVariant 4 · 3 implementations · 7 checks per implementation

Case contract

Stipulated court holidays for a year: new-year (Jan 1), mlk (3rd Monday Jan), memorial (last Monday May), juneteenth (Jun 19), independence (Jul 4), labor (1st Monday Sep), thanksgiving (4th Thursday Nov), day-after-thanksgiving, christmas (Dec 25). Fixed-date holidays on Saturday are observed the Friday before and on Sunday the Monday after. When next year's January 1 is a Saturday, a new-year-observed entry falls on December 31 of this year; an observed date that falls in another year is not part of this year's calendar. Return [[name, date]] sorted by date.

Why this case matters

Docketing systems compute filing and response deadlines from trigger events; a wrong date can forfeit a right.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
2027 five mondays may	`[["new-year", "2027-01-01"], ["mlk", "2027-01-18"], ["memorial", "2027-05-31"], ["juneteenth", "2027-06-18"], ["independence", "2027-07-05"], ["labor", "2027-09-06"], ["thanksgiving", "2027-11-25"], ["day-after-thanksgiving", "2027-11-26"], ["christmas", "2027-12-24"]]`	`[["new-year", "2027-01-01"], ["mlk", "2027-01-18"], ["memorial", "2027-05-31"], ["juneteenth", "2027-06-18"], ["independence", "2027-07-05"], ["labor", "2027-09-06"], ["thanksgiving", "2027-11-25"], ["day-after-thanksgiving", "2027-11-26"], ["christmas", "2027-12-24"], ["new-year-observed", "2027-12-31"]]`	Failed

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