DateInterval

DateInterval[{start,end}] represents the continuous interval of time between start and end.

DateInterval[{start,end},gran] represents an interval of dates with calendar granularity gran.

DateInterval[{{start1,end1},{start2,end2},…}] represents the union of intervals start1 to end1, start2 to end2, ….

DateInterval[gdate] gives the date interval from the initial to final instants of the granular date object gdate.

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