Conciseness

The body is two sentences (~30 words) with zero padding and no explanation of concepts Claude already knows — every token earns its place, matching the anchor 'lean and efficient; assumes Claude's competence'. No trimming is possible without losing information.

Actionability

Concrete input examples ("next Friday", "the 3rd of March") and a precise output format ("YYYY-MM-DD format") plus a concrete output directive ("show both local times side-by-side") give mostly executable guidance. Minor gaps — no rule for anchoring relative dates to today, no method for timezone lookup — keep it below the fully-executable 5 anchor; it is well above the incomplete/pseudocode level of 3.

Workflow Clarity

Both behaviors ("Parse natural language dates ... into YYYY-MM-DD format" and "show both local times side-by-side") are single, unambiguous actions with clear expected outputs, and no destructive or batch operations require validation checkpoints. The unanchored relative-date reference ("next Friday") is a minor gap that prevents the clean 5 the simple-skill exception would otherwise allow.

Progressive Disclosure

The body is two sentences, under the 50-line threshold, and no bundle files (references/, scripts/, assets/) exist, so nothing belongs in external references. Per the judging guideline, such a skill with appropriately inline content and no need for external references scores 5 on progressive disclosure.

Specificity

"Converts dates between formats" is one concrete action and "handles timezone differences" a second capability area, matching the anchor 'names domain and 1-2 concrete actions, but not comprehensive' (like 'Processes PDF files and extracts content'). It is not a 4 because "handles" is a generic verb and no specific formats are named, and not a 2 because two distinct capabilities are stated rather than purely generic 'processes' language.

Completeness

The 'what' is stated ("Converts dates between formats and handles timezone differences") but there is no 'Use when...' clause or any equivalent trigger guidance, which per the judging guidelines caps completeness at 3 ('clear what, when missing'). It cannot be 4 without any 'when', and is above 2 because the 'what' is clearly stated.

Trigger Term Quality

Keywords "dates", "formats", and "timezone" are relevant to the domain, but the natural phrases a user would actually say ("next Friday", "date parsing", "time zone conversion", "meeting times") are missing, matching 'some relevant keywords but missing common variations or synonyms'. It lacks the coverage of the 4 anchor and has more domain relevance than the single generic keyword of the 2 anchor.

Distinctiveness Conflict Risk

The date/timezone domain ("dates", "timezone differences") is somewhat specific and would not trigger for unrelated skills, but with no distinct trigger phrases it could overlap with other date, calendar, or scheduling skills — 'somewhat specific but could still overlap with similar skills'. It does not reach 4 because nothing separates it from closely related date-handling skills.