pub.date:calculateDateDifference

WmPublic. Calculates the difference between two dates and returns the result as seconds, minutes, hours, and days.

startDate	String Starting date and time.
endDate	String Ending date and time.
startDatePattern	String Format in which the startDate parameter is to be specified (for example, yyyyMMdd HH:mm:ss.SSS). For pattern-string notation, see Pattern String Symbols.
endDatePattern	String Format in which the endDate parameter is to be specified (for example, yyyyMMdd HH:mm:ss.SSS). For pattern-string notation, see Pattern String Symbols.

dateDifferenceSeconds	String The difference between the startingDateTime and endingDateTime, truncated to the nearest whole number of seconds.
dateDifferenceMinutes	String The difference between the startingDateTime and endingDateTime, truncated to the nearest whole number of minutes.
dateDifferenceHours	String The difference between the startingDateTime and endingDateTime, truncated to the nearest whole number of hours.
dateDifferenceDays	String The difference between the startingDateTime and endingDateTime, truncated to the nearest whole number of days.

Each output value represents the same date difference, but in a different scale. Do not add these values together. Make sure your subsequent flow steps use the correct output, depending on the scale required.