com.tilwhen/tilwhen

repo:https://github.com/abmwine/tilwhen

Deterministic date arithmetic with auditable receipts: business days, due dates, holidays.

transport:: remote
credential class:: self-provisionable
repo:: https://github.com/abmwine/tilwhen

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Tools

add_days
The date N whole calendar days after a date (exclusive counting: the start date is day 0).
shallow
business_days
Span mode (from+to): business days between two dates, exclusive of the start day, inclusive of the end day. Add mode (days, optional date): the date N business days away. Optional holiday jurisdiction or custom calendar, and a selectable working week.
shallow
days_between
Signed whole calendar days from one date to another, midnight to midnight, endpoints exclusive (the gap).
shallow
explain
Runs any operation and returns the receipt plus human-readable derivation steps. Accepts the same fields as the other tools, discriminated by op.
shallow
holidays
Observed public holidays with the nominal (legal) date and status: rule (statutory) or declared (officially declared for that year). Declared-only holidays are omitted for undeclared years, with a holiday_data_incomplete warning.
shallow
invoice_due
Due date for Net-N payment terms (calendar days, invoice date = day 0). Optional roll-forward past weekends and, with a jurisdiction or custom calendar, public holidays.
shallow
next_occurrence
The next occurrence strictly after the base date (default today) of either a tracked event slug (e.g. "christmas") or a weekday (0 = Sunday .. 6 = Saturday). Provide exactly one of event/weekday.
shallow
parse_date_query
Parses queries like "90 business days from today in uganda" into a normalized operation, answers it, and returns the auditable receipt. Ambiguous dates (03/04/2027) return needsClarification instead of a guess.
shallow
subtract_days
The date N whole calendar days before a date.
shallow

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