duty/calculate

• dutyDayFor: Return the operator-designated day an instant falls in: from the most recent dayStartTime in timeZone at or before the instant, up to (not including) the next one.
• dutyTotals: Return the time a duty log spends in any of statuses inside a window, as an exact ISO 8601 duration.
• dutyViolations: Return every violation of a set of hours-of-work rules inside a range, each with the window that failed it: the record over a month, not the check before dispatch.
• evaluateDutyLog: Evaluate every hours-of-work rule over a duty log at one instant, and report each one whether or not it binds.
• longestRun: Return the longest unbroken stretch a duty log spends in any of statuses inside a window.
• qualifyingRestPairs: Return every paired rest in a duty log: two separate rests that together count as one, because they meet all three floors of spec.pair.
• qualifyingRests: Return every rest of at least minimum in a duty log: the runs of touching entries in any of spec.statuses that last that long.

Types

• DutyDay: The operator-designated day: a 24-hour period that starts at dayStartTime in timeZone, wherever the person is.
• DutyReport: Every rule of a regime evaluated at one instant.
• DutyViolation: One failed window in a range, for the record.
• PeriodBasis: Which arithmetic a window used: exact elapsed time, operator days, or local calendar periods.
• RestPair: Two rest periods that satisfy a PairSpec, in the order they were taken.
• RuleOutcome: One rule evaluated at one instant, reported whether or not it binds.