{"abstract":"Programmes that cross midnight report offsets of almost minus a day.","category":"Broadcast timecode arithmetic","checks":9,"contract":"Express label tc relative to programme start as \"+HH:MM:SS:FF\" or \"-HH:MM:SS:FF\" along the shorter way round the 24-hour clock (an offset of exactly 12 hours is negative). Zero is \"+\".","evaluation_group":"w2-broadcast-timecode-arithmetic-programme-relative","failed_approach":"The absolute difference loses the sign of pre-roll offsets.","family":"w2-broadcast-timecode-arithmetic-programme-relative-offset-wrap","id":"FA-78646","implementations":{"attempt":{"sha256":"4677622836f65abc776ddcb49495eee703c58320b8107c8319147d869e5d3395","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(tc, start, fps):\n    def fr(t):\n        h,m,s,f=map(int,t.split(':'))\n        return ((h*60+m)*60+s)*fps+f\n    day=86400*fps\n    d=abs(fr(tc)-fr(start))\n    if d>=day//2:\n        d-=day\n    sign='-' if d<0 else '+'\n    a=abs(d)\n    return '%s%02d:%02d:%02d:%02d'%(sign,a//(3600*fps),a//(60*fps)%60,a//fps%60,a%fps)\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('regression: offset wrap', ['00:01:00:00', '23:59:00:00', 25], '+00:02:00:00'), ('regression variant: offset wrap', ['01:00:30:01', '23:59:00:00', 25], '+01:01:30:01'), ('partial repair probe: offset wrap', ['01:59:59:29', '23:59:00:00', 30], '+02:00:59:29'), ('partial repair variant: offset wrap', ['00:00:00:00', '01:00:00:00', 30], '-01:00:00:00'), ('boundary control', ['23:59:50:00', '00:00:10:00', 25], '-00:00:20:00'), ('boundary control', ['01:00:00:00', '01:00:00:00', 30], '+00:00:00:00'), ('normal control', ['00:59:30:00', '00:00:10:00', 25], '+00:59:20:00'), ('normal control', ['22:00:00:00', '10:00:00:00', 30], '-12:00:00:00'), ('normal control', ['01:01:01:01', '01:00:00:00', 25], '+00:01:01:01')], [('regression: offset wrap', ['01:59:59:29', '23:59:00:00', 30], '+02:00:59:29'), ('regression variant: offset wrap', ['01:00:01:00', '23:59:00:00', 25], '+01:01:01:00'), ('partial repair probe: offset wrap', ['12:59:59:24', '23:59:00:00', 25], '-10:59:00:01'), ('partial repair variant: offset wrap', ['00:01:00:00', '01:00:00:00', 25], '-00:59:00:00'), ('boundary control', ['01:00:00:00', '01:00:00:00', 30], '+00:00:00:00'), ('boundary control', ['23:59:50:00', '00:00:10:00', 25], '-00:00:20:00'), ('normal control', ['23:00:59:15', '00:00:10:00', 30], '-00:59:10:15'), ('normal control', ['12:59:59:24', '01:00:00:00', 30], '+11:59:59:24'), ('normal control', ['00:00:10:00', '00:00:10:00', 30], '+00:00:00:00')], [('regression: offset wrap', ['01:01:01:00', '23:59:00:00', 25], '+01:02:01:00'), ('regression variant: offset wrap', ['10:01:01:12', '23:59:00:00', 25], '+10:02:01:12'), ('partial repair probe: offset wrap', ['01:00:01:01', '10:00:00:00', 30], '-08:59:58:29'), ('partial repair variant: offset wrap', ['00:00:00:00', '00:00:10:00', 30], '-00:00:10:00'), ('boundary control', ['23:59:50:00', '00:00:10:00', 25], '-00:00:20:00'), ('boundary control', ['01:00:00:00', '01:00:00:00', 30], '+00:00:00:00'), ('normal control', ['01:01:30:01', '01:00:00:00', 30], '+00:01:30:01'), ('normal control', ['01:00:30:01', '01:00:00:00', 30], '+00:00:30:01'), ('normal control', ['12:59:59:24', '00:00:10:00', 30], '-11:00:10:06')], [('regression: offset wrap', ['01:00:00:00', '23:59:00:00', 30], '+01:01:00:00'), ('regression variant: offset wrap', ['10:01:59:01', '23:59:00:00', 30], '+10:02:59:01'), ('partial repair probe: offset wrap', ['00:00:00:00', '00:00:10:00', 25], '-00:00:10:00'), ('partial repair variant: offset wrap', ['10:29:01:01', '23:59:00:00', 25], '+10:30:01:01'), ('boundary control', ['01:00:00:00', '01:00:00:00', 30], '+00:00:00:00'), ('boundary control', ['23:59:50:00', '00:00:10:00', 25], '-00:00:20:00'), ('normal control', ['01:29:30:15', '01:00:00:00', 30], '+00:29:30:15'), ('normal control', ['10:00:30:00', '01:00:00:00', 25], '+09:00:30:00'), ('normal control', ['10:29:30:01', '01:00:00:00', 25], '+09:29:30:01')], [('regression: offset wrap', ['10:29:01:01', '23:59:00:00', 25], '+10:30:01:01'), ('regression variant: offset wrap', ['01:01:30:12', '23:59:00:00', 25], '+01:02:30:12'), ('partial repair probe: offset wrap', ['00:01:59:15', '01:00:00:00', 30], '-00:58:00:15'), ('partial repair variant: offset wrap', ['01:00:30:01', '23:59:00:00', 25], '+01:01:30:01'), ('boundary control', ['23:59:50:00', '00:00:10:00', 25], '-00:00:20:00'), ('boundary control', ['01:00:00:00', '01:00:00:00', 30], '+00:00:00:00'), ('normal control', ['23:01:59:12', '10:00:00:00', 25], '-10:58:00:13'), ('normal control', ['23:59:00:00', '23:59:00:00', 30], '+00:00:00:00'), ('normal control', ['00:01:00:29', '00:00:10:00', 30], '+00:00:50:29')]]\nfor label, args, expected in fixtures[N-1]:\n    check(label, solve(*args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"cac864f77d6194c034e39744a0a4497d5277d6852456ef6e9e0ddd745c139ff6","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(tc, start, fps):\n    def fr(t):\n        h,m,s,f=map(int,t.split(':'))\n        return ((h*60+m)*60+s)*fps+f\n    day=86400*fps\n    d=fr(tc)-fr(start)\n    if d>=day//2:\n        d-=day\n    sign='-' if d<0 else '+'\n    a=abs(d)\n    return '%s%02d:%02d:%02d:%02d'%(sign,a//(3600*fps),a//(60*fps)%60,a//fps%60,a%fps)\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('regression: offset wrap', ['00:01:00:00', '23:59:00:00', 25], '+00:02:00:00'), ('regression variant: offset wrap', ['01:00:30:01', '23:59:00:00', 25], '+01:01:30:01'), ('partial repair probe: offset wrap', ['01:59:59:29', '23:59:00:00', 30], '+02:00:59:29'), ('partial repair variant: offset wrap', ['00:00:00:00', '01:00:00:00', 30], '-01:00:00:00'), ('boundary control', ['23:59:50:00', '00:00:10:00', 25], '-00:00:20:00'), ('boundary control', ['01:00:00:00', '01:00:00:00', 30], '+00:00:00:00'), ('normal control', ['00:59:30:00', '00:00:10:00', 25], '+00:59:20:00'), ('normal control', ['22:00:00:00', '10:00:00:00', 30], '-12:00:00:00'), ('normal control', ['01:01:01:01', '01:00:00:00', 25], '+00:01:01:01')], [('regression: offset wrap', ['01:59:59:29', '23:59:00:00', 30], '+02:00:59:29'), ('regression variant: offset wrap', ['01:00:01:00', '23:59:00:00', 25], '+01:01:01:00'), ('partial repair probe: offset wrap', ['12:59:59:24', '23:59:00:00', 25], '-10:59:00:01'), ('partial repair variant: offset wrap', ['00:01:00:00', '01:00:00:00', 25], '-00:59:00:00'), ('boundary control', ['01:00:00:00', '01:00:00:00', 30], '+00:00:00:00'), ('boundary control', ['23:59:50:00', '00:00:10:00', 25], '-00:00:20:00'), ('normal control', ['23:00:59:15', '00:00:10:00', 30], '-00:59:10:15'), ('normal control', ['12:59:59:24', '01:00:00:00', 30], '+11:59:59:24'), ('normal control', ['00:00:10:00', '00:00:10:00', 30], '+00:00:00:00')], [('regression: offset wrap', ['01:01:01:00', '23:59:00:00', 25], '+01:02:01:00'), ('regression variant: offset wrap', ['10:01:01:12', '23:59:00:00', 25], '+10:02:01:12'), ('partial repair probe: offset wrap', ['01:00:01:01', '10:00:00:00', 30], '-08:59:58:29'), ('partial repair variant: offset wrap', ['00:00:00:00', '00:00:10:00', 30], '-00:00:10:00'), ('boundary control', ['23:59:50:00', '00:00:10:00', 25], '-00:00:20:00'), ('boundary control', ['01:00:00:00', '01:00:00:00', 30], '+00:00:00:00'), ('normal control', ['01:01:30:01', '01:00:00:00', 30], '+00:01:30:01'), ('normal control', ['01:00:30:01', '01:00:00:00', 30], '+00:00:30:01'), ('normal control', ['12:59:59:24', '00:00:10:00', 30], '-11:00:10:06')], [('regression: offset wrap', ['01:00:00:00', '23:59:00:00', 30], '+01:01:00:00'), ('regression variant: offset wrap', ['10:01:59:01', '23:59:00:00', 30], '+10:02:59:01'), ('partial repair probe: offset wrap', ['00:00:00:00', '00:00:10:00', 25], '-00:00:10:00'), ('partial repair variant: offset wrap', ['10:29:01:01', '23:59:00:00', 25], '+10:30:01:01'), ('boundary control', ['01:00:00:00', '01:00:00:00', 30], '+00:00:00:00'), ('boundary control', ['23:59:50:00', '00:00:10:00', 25], '-00:00:20:00'), ('normal control', ['01:29:30:15', '01:00:00:00', 30], '+00:29:30:15'), ('normal control', ['10:00:30:00', '01:00:00:00', 25], '+09:00:30:00'), ('normal control', ['10:29:30:01', '01:00:00:00', 25], '+09:29:30:01')], [('regression: offset wrap', ['10:29:01:01', '23:59:00:00', 25], '+10:30:01:01'), ('regression variant: offset wrap', ['01:01:30:12', '23:59:00:00', 25], '+01:02:30:12'), ('partial repair probe: offset wrap', ['00:01:59:15', '01:00:00:00', 30], '-00:58:00:15'), ('partial repair variant: offset wrap', ['01:00:30:01', '23:59:00:00', 25], '+01:01:30:01'), ('boundary control', ['23:59:50:00', '00:00:10:00', 25], '-00:00:20:00'), ('boundary control', ['01:00:00:00', '01:00:00:00', 30], '+00:00:00:00'), ('normal control', ['23:01:59:12', '10:00:00:00', 25], '-10:58:00:13'), ('normal control', ['23:59:00:00', '23:59:00:00', 30], '+00:00:00:00'), ('normal control', ['00:01:00:29', '00:00:10:00', 30], '+00:00:50:29')]]\nfor label, args, expected in fixtures[N-1]:\n    check(label, solve(*args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"fixed":{"sha256":"ed3377f20a67c142c880cf3bc360a2d2b5f204e127ffe47cbd6740d3bc9bb0b6","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(tc, start, fps):\n    def fr(t):\n        h,m,s,f=map(int,t.split(':'))\n        return ((h*60+m)*60+s)*fps+f\n    day=86400*fps\n    d=(fr(tc)-fr(start))%day\n    if d>=day//2:\n        d-=day\n    sign='-' if d<0 else '+'\n    a=abs(d)\n    return '%s%02d:%02d:%02d:%02d'%(sign,a//(3600*fps),a//(60*fps)%60,a//fps%60,a%fps)\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('regression: offset wrap', ['00:01:00:00', '23:59:00:00', 25], '+00:02:00:00'), ('regression variant: offset wrap', ['01:00:30:01', '23:59:00:00', 25], '+01:01:30:01'), ('partial repair probe: offset wrap', ['01:59:59:29', '23:59:00:00', 30], '+02:00:59:29'), ('partial repair variant: offset wrap', ['00:00:00:00', '01:00:00:00', 30], '-01:00:00:00'), ('boundary control', ['23:59:50:00', '00:00:10:00', 25], '-00:00:20:00'), ('boundary control', ['01:00:00:00', '01:00:00:00', 30], '+00:00:00:00'), ('normal control', ['00:59:30:00', '00:00:10:00', 25], '+00:59:20:00'), ('normal control', ['22:00:00:00', '10:00:00:00', 30], '-12:00:00:00'), ('normal control', ['01:01:01:01', '01:00:00:00', 25], '+00:01:01:01')], [('regression: offset wrap', ['01:59:59:29', '23:59:00:00', 30], '+02:00:59:29'), ('regression variant: offset wrap', ['01:00:01:00', '23:59:00:00', 25], '+01:01:01:00'), ('partial repair probe: offset wrap', ['12:59:59:24', '23:59:00:00', 25], '-10:59:00:01'), ('partial repair variant: offset wrap', ['00:01:00:00', '01:00:00:00', 25], '-00:59:00:00'), ('boundary control', ['01:00:00:00', '01:00:00:00', 30], '+00:00:00:00'), ('boundary control', ['23:59:50:00', '00:00:10:00', 25], '-00:00:20:00'), ('normal control', ['23:00:59:15', '00:00:10:00', 30], '-00:59:10:15'), ('normal control', ['12:59:59:24', '01:00:00:00', 30], '+11:59:59:24'), ('normal control', ['00:00:10:00', '00:00:10:00', 30], '+00:00:00:00')], [('regression: offset wrap', ['01:01:01:00', '23:59:00:00', 25], '+01:02:01:00'), ('regression variant: offset wrap', ['10:01:01:12', '23:59:00:00', 25], '+10:02:01:12'), ('partial repair probe: offset wrap', ['01:00:01:01', '10:00:00:00', 30], '-08:59:58:29'), ('partial repair variant: offset wrap', ['00:00:00:00', '00:00:10:00', 30], '-00:00:10:00'), ('boundary control', ['23:59:50:00', '00:00:10:00', 25], '-00:00:20:00'), ('boundary control', ['01:00:00:00', '01:00:00:00', 30], '+00:00:00:00'), ('normal control', ['01:01:30:01', '01:00:00:00', 30], '+00:01:30:01'), ('normal control', ['01:00:30:01', '01:00:00:00', 30], '+00:00:30:01'), ('normal control', ['12:59:59:24', '00:00:10:00', 30], '-11:00:10:06')], [('regression: offset wrap', ['01:00:00:00', '23:59:00:00', 30], '+01:01:00:00'), ('regression variant: offset wrap', ['10:01:59:01', '23:59:00:00', 30], '+10:02:59:01'), ('partial repair probe: offset wrap', ['00:00:00:00', '00:00:10:00', 25], '-00:00:10:00'), ('partial repair variant: offset wrap', ['10:29:01:01', '23:59:00:00', 25], '+10:30:01:01'), ('boundary control', ['01:00:00:00', '01:00:00:00', 30], '+00:00:00:00'), ('boundary control', ['23:59:50:00', '00:00:10:00', 25], '-00:00:20:00'), ('normal control', ['01:29:30:15', '01:00:00:00', 30], '+00:29:30:15'), ('normal control', ['10:00:30:00', '01:00:00:00', 25], '+09:00:30:00'), ('normal control', ['10:29:30:01', '01:00:00:00', 25], '+09:29:30:01')], [('regression: offset wrap', ['10:29:01:01', '23:59:00:00', 25], '+10:30:01:01'), ('regression variant: offset wrap', ['01:01:30:12', '23:59:00:00', 25], '+01:02:30:12'), ('partial repair probe: offset wrap', ['00:01:59:15', '01:00:00:00', 30], '-00:58:00:15'), ('partial repair variant: offset wrap', ['01:00:30:01', '23:59:00:00', 25], '+01:01:30:01'), ('boundary control', ['23:59:50:00', '00:00:10:00', 25], '-00:00:20:00'), ('boundary control', ['01:00:00:00', '01:00:00:00', 30], '+00:00:00:00'), ('normal control', ['23:01:59:12', '10:00:00:00', 25], '-10:58:00:13'), ('normal control', ['23:59:00:00', '23:59:00:00', 30], '+00:00:00:00'), ('normal control', ['00:01:00:29', '00:00:10:00', 30], '+00:00:50:29')]]\nfor label, args, expected in fixtures[N-1]:\n    check(label, solve(*args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":"A deterministic bounded teaching model with a stipulated toy contract; it does not claim conformance to SMPTE or any broadcast standard. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"w2-broadcast-timecode-arithmetic-programme-relative-offset-wrap","generated_at":"2026-09-29T14:49:37.333077+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Timecode arithmetic errors misplace edits, commercial breaks and captions against the broadcast clock.","repair":"Wrap the difference modulo one day before folding.","root_cause":"The raw difference is used without wrapping.","sha256":"1d06018630a20dc025eab1c4f40c92a38430fe309e21e05dbf927639e508e5b7","title":"Programme-relative signed timecode: offset wrap · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":42.451,"exit_code":1,"observations":[{"actual":"-00:02:00:00","check":"regression: offset wrap","expected":"+00:02:00:00","passed":false},{"actual":"-01:01:30:01","check":"regression variant: offset wrap","expected":"+01:01:30:01","passed":false},{"actual":"-02:00:59:29","check":"partial repair probe: offset wrap","expected":"+02:00:59:29","passed":false},{"actual":"+01:00:00:00","check":"partial repair variant: offset wrap","expected":"-01:00:00:00","passed":false},{"actual":"-00:00:20:00","check":"boundary control","expected":"-00:00:20:00","passed":true},{"actual":"+00:00:00:00","check":"boundary control","expected":"+00:00:00:00","passed":true},{"actual":"+00:59:20:00","check":"normal control","expected":"+00:59:20:00","passed":true},{"actual":"-12:00:00:00","check":"normal control","expected":"-12:00:00:00","passed":true},{"actual":"+00:01:01:01","check":"normal control","expected":"+00:01:01:01","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression: offset wrap\", \"actual\": \"-00:02:00:00\", \"expected\": \"+00:02:00:00\", \"passed\": false}, {\"check\": \"regression variant: offset wrap\", \"actual\": \"-01:01:30:01\", \"expected\": \"+01:01:30:01\", \"passed\": false}, {\"check\": \"partial repair probe: offset wrap\", \"actual\": \"-02:00:59:29\", \"expected\": \"+02:00:59:29\", \"passed\": false}, {\"check\": \"partial repair variant: offset wrap\", \"actual\": \"+01:00:00:00\", \"expected\": \"-01:00:00:00\", \"passed\": false}, {\"check\": \"boundary control\", \"actual\": \"-00:00:20:00\", \"expected\": \"-00:00:20:00\", \"passed\": true}, {\"check\": \"boundary control\", \"actual\": \"+00:00:00:00\", \"expected\": \"+00:00:00:00\", \"passed\": true}, {\"check\": \"normal control\", \"actual\": \"+00:59:20:00\", \"expected\": \"+00:59:20:00\", \"passed\": true}, {\"check\": \"normal control\", \"actual\": \"-12:00:00:00\", \"expected\": \"-12:00:00:00\", \"passed\": true}, {\"check\": \"normal control\", \"actual\": \"+00:01:01:01\", \"expected\": \"+00:01:01:01\", \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":41.627,"exit_code":1,"observations":[{"actual":"-23:58:00:00","check":"regression: offset wrap","expected":"+00:02:00:00","passed":false},{"actual":"-22:58:29:24","check":"regression variant: offset wrap","expected":"+01:01:30:01","passed":false},{"actual":"-21:59:00:01","check":"partial repair probe: offset wrap","expected":"+02:00:59:29","passed":false},{"actual":"-01:00:00:00","check":"partial repair variant: offset wrap","expected":"-01:00:00:00","passed":true},{"actual":"-00:00:20:00","check":"boundary control","expected":"-00:00:20:00","passed":true},{"actual":"+00:00:00:00","check":"boundary control","expected":"+00:00:00:00","passed":true},{"actual":"+00:59:20:00","check":"normal control","expected":"+00:59:20:00","passed":true},{"actual":"-12:00:00:00","check":"normal control","expected":"-12:00:00:00","passed":true},{"actual":"+00:01:01:01","check":"normal control","expected":"+00:01:01:01","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression: offset wrap\", \"actual\": \"-23:58:00:00\", \"expected\": \"+00:02:00:00\", \"passed\": false}, {\"check\": \"regression variant: offset wrap\", \"actual\": \"-22:58:29:24\", \"expected\": \"+01:01:30:01\", \"passed\": false}, {\"check\": \"partial repair probe: offset wrap\", \"actual\": \"-21:59:00:01\", \"expected\": \"+02:00:59:29\", \"passed\": false}, {\"check\": \"partial repair variant: offset wrap\", \"actual\": \"-01:00:00:00\", \"expected\": \"-01:00:00:00\", \"passed\": true}, {\"check\": \"boundary control\", \"actual\": \"-00:00:20:00\", \"expected\": \"-00:00:20:00\", \"passed\": true}, {\"check\": \"boundary control\", \"actual\": \"+00:00:00:00\", \"expected\": \"+00:00:00:00\", \"passed\": true}, {\"check\": \"normal control\", \"actual\": \"+00:59:20:00\", \"expected\": \"+00:59:20:00\", \"passed\": true}, {\"check\": \"normal control\", \"actual\": \"-12:00:00:00\", \"expected\": \"-12:00:00:00\", \"passed\": true}, {\"check\": \"normal control\", \"actual\": \"+00:01:01:01\", \"expected\": \"+00:01:01:01\", \"passed\": true}], \"passed\": false}\n"},"fixed":{"elapsed_ms":37.82,"exit_code":0,"observations":[{"actual":"+00:02:00:00","check":"regression: offset wrap","expected":"+00:02:00:00","passed":true},{"actual":"+01:01:30:01","check":"regression variant: offset wrap","expected":"+01:01:30:01","passed":true},{"actual":"+02:00:59:29","check":"partial repair probe: offset wrap","expected":"+02:00:59:29","passed":true},{"actual":"-01:00:00:00","check":"partial repair variant: offset wrap","expected":"-01:00:00:00","passed":true},{"actual":"-00:00:20:00","check":"boundary 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