Date Intervals, Formats, and Functions

The custom time intervals that are available in Base SAS software can be used in SAS/ETS procedures. Custom time intervals enable you to specify beginning and ending dates and seasonality for time intervals according to any definition. Such intervals can be used to define the following:

• fiscal intervals such as monthly intervals that begin on a day other than the first day of the month (for example, intervals that begin on the th day of each month)

• fiscal intervals such as monthly intervals that begin on different days for different months (for example, March of 2000 can begin on March , but April of 2000 can begin on April )

• business days, such as banking days that exclude holidays

• hourly intervals that omit hours that the business is closed