%SECONDS built-in function converts a number into a duration that can be added to a time or timestamp value.
%SECONDS (Number)
Required. The number to be converted to duration and added to or subtracted from a time or timestamp value.
%SECONDS can only be the right-hand value in an addition or subtraction operation. The left-hand value must be a time or timestamp. The result is a time or timestamp value with the appropriate number of seconds added or subtracted. For a time, the resulting value is *ISO format.
Built-in Function Overview
Adding or Subtracting Dates
%DAYS
%DIFF
%HOURS
%MINUTES
%MONTHS
%MSECONDS
%YEARS