Using JMP - SAS

436 Formula Functions Reference Appendix B
Date Time Functions
Abbrev Date, Long Date, Short Date
The argument for these date functions is a JMP date. They return character strings that are the formatted
representation of the argument. For example:
• Abbrev Date(2752272000) returns Wed, Mar 20,1991.
• Long Date(2752272000) returns Wednesday, March 20, 1991.
• Short Date(2752272000) returns 3/20/91.
Format
The first argument in the Format function is a JMP date. This function returns the character string
representation of the date by the date format that you specify in the second argument, which is a quoted
string. If you apply this formula to a numeric column, JMP automatically changes the column’s data type to
character.
You can also supply a column for the first argument and leave the rest blank. The result is the formatted
value of the column reference. This can be used to extract value labels of a column when the value labels are
turned off.
MDYHMS
The argument of MDYHMS is a JMP date. This function shows all date and time fields, appending zeros as
time fields if no time information is present. This is useful if a date column is formulated such that not all
date information is displayed. The MDYHMS function can be used to see all available date and time
information.
Date Increment
Adds 1 or more intervals to a starting datetime value. For example, Date Increment(Today(), "Day", 3) adds
three days to the current date. Date Increment(Today(), "Year", 3) adds 3 years to the current date.
Date Difference
Returns the difference of two datetime values. The interval argument can be Second, Minute, Hour, Day,
Week, Month, Quarter, Year. The alignment arguments are described here:
Start
Actual
is used to count the number of times an interval starts.
is used to count whole intervals.
Fractional is used to count fractional intervals.
For example, the following formula returns 207.890243055556, the number of days between the dates:
Date Difference(01Jan2010:00:00:00, 27Jul2010:21:21:57, "Day", "fractional");
The following formula returns 207, the number of completed days between the dates:
Date Difference(01Jan2010:00:00:00, 27Jul2010:21:21:57, "Day", "actual");
The following formula returns 9, the number of completed hours between the times: