Get the date range for the previous full calendar year, from January 1 through December 31. It returns local dates and precise UTC boundaries for annual reports, year-over-year comparisons, and timestamp-based data queries.
Resolve "lastYear" to a concrete ISO date range relative to your run time — the previous full calendar year. Returns inclusive civil dates plus exact UTC instants so you have temporal context without computing dates by hand. Read-only: no writes, no network. Use before a task over last year (annual reports, year-over-year).
Review the instructions the agent will receive before you install.
Get the concrete date range for the previous full calendar year by running the bundled resolver:
node "$AGENT_DIR/.claude/skills/temporal/when.mjs" lastYear
It prints a human-readable line plus a JSON record:
start / end — inclusive civil dates (YYYY-MM-DD) in your local timezonestartUtc / endExclusiveUtc — the same window as a half-open [start, end)
range of exact UTC instants, for timestamp-based queriesdays, timezone, asOf — the span, your timezone, and when this resolvedUse the returned dates as the time bounds for the task at hand. Do not derive
dates by hand — this resolver is the source of truth. For the full window list
or an arbitrary range (e.g. last45days, last6months), see the /temporal skill.
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