The default value is 1.Īn optional quoted string that contains a keyword:

'Year', 'Quarter', 'Month', 'Week', 'Day', 'Hour', 'Minute', and 'Second' are supported.Īn optional number that specifies the number of intervals. Note that there is no error-checking, so you can enter February 31.ĭate Increment(datetime, 'interval_name',, )Īdds 1 or more intervals to a starting datetime value.Ī quoted string that contains the name of a datetime interval. The specified date, expressed as the number of seconds since midnight, 1 January 1904. – 'fractional' returns fractional differences using averages for 'Year', 'Quarter', and 'Month' intervals.Ĭonstructs a date value from the arguments. – 'start' includes full or partial intervals. Returns the difference in intervals of two date-time values.Ī quoted string that contains a date-time interval, such as 'Month', 'Day', or 'Hour'.Īn optional string. Values that represent less than a year are returned as durations.Ī date that is calculated from the number or expression provided.ĭate Difference(datetime1, datetime2, 'interval_name', )

Values that represent one year or more are returned as dates. If you examine the values of dates, they should be appropriately large numbers (for example, 5oct1998 is 2990390400).Ĭan be the number of seconds since the base date (midnight, January 1, 1904), or any date-time operator.ĭate-Time Functions and Formats in the Scripting Guide.įormats the number or expression x so that it shows as a date or duration when displayed in a text window. The expression x=01Jan1904 sets x to zero, since the indicated date is the base date or “zero date” in JMP. Datetime values are handled internally as numbers of seconds since midnight, January 1, 1904.

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