Interface CalendarBucketing

A bar spans count calendar units, opening at local midnight on the first day of the period in timezone.

timezone on the entry pins the code to one exchange's calendar; leaving it off lets the bucket follow whatever zone the caller resolves in, which is the chart's configured zone.

interface CalendarBucketing {
    count?: number;
    mode: "calendar";
    timezone?: string;
    unit: CalendarUnit;
}