Functions That Work with Date, Datetime, and Time Intervals
Functions in this group work with date or time intervals. The INTCK function, when used with date or datetime values, can determine the number of interval boundaries crossed between two dates. When used with SAS time values, it can determine the number of hour, minute, or second boundaries between two time values.
The INTNX function, when used with SAS date or datetime values, is used to determine the date after a given number of intervals have passed. When used with SAS time values, it computes the time after a given number of time interval units have passed.
You will find an excellent description of these two functions in SAS Language Reference: Concepts or in the following technical ...
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