Datetime values are handled internally as numbers of seconds since midnight, January 1, 1904.
The expression x=01Jan1904 sets x to zero, since the indicated date is the base date or “zero date” in JMP. If you examine the values of dates, they should be appropriately large numbers (for example, 5oct1998 is 2990390400).
Abbrev Date(date)
Description
Converts the provided date to a quoted string.
Returns
A quoted string representation of the date.
Argument
date
Can be the number of seconds since the base date (midnight, January 1, 1904), or any date-time operator.
Example
Abbrev Date( 29Feb2004 );
02/29/2004
See Also
Date-Time Functions and Formats in the Scripting Guide
As Date(x)
Description
Formats the number or expression x so that it shows as a date or duration when displayed in a text window. Values that represent one year or more are returned as dates. Values that represent less than a year are returned as durations.
Returns
A date that is calculated from the number or expression provided.
Argument
x
Number or expression.
See Also
Date-Time Functions and Formats in the Scripting Guide
Date Difference(datetime1, datetime2, interval name, <alignment>)
Description
Returns the difference in intervals of two date-time values.
Returns
A number.
Required Arguments
datetime1, datetime2
Date-time values.
interval name
A quoted string that contains a date-time interval, such as "month", "day", or "hour".
Optional Arguments
alignment
A quoted string:
– "Start" includes full or partial intervals.
– "Actual" counts only whole intervals.
– "Fractional" returns fractional differences using averages for "year", "quarter", and "month" intervals.
Date DMY(day, month, year)
Description
Constructs a date value from the arguments.
Returns
The specified date, expressed as the number of seconds since midnight, 1 January 1904.
Arguments
day
The numeric day of month, 1-31. Note that there is no error-checking, so you can enter February 31.
month
The numeric month, 1-12.
year
The year.
Date Increment(datetime, interval name, <increment>, <alignment>)
Description
Adds 1 or more intervals to a starting datetime value.
Returns
Returns the new datetime value.
Required Arguments
datetime
The starting datetime value.
interval name
A quoted string that contains the name of a datetime interval. "year", "quarter", "month", "week", "day", "hour", "minute", and "second" are supported.
Optional Arguments
increment
A number that specifies the number of intervals. The default value is 1.
alignment
A quoted string that contains a keyword:
– "Start" truncates the date to the nearest interval prior to adding the increment. For example, it removes the time and outputs the date. "start" is the default value.
– "Actual" retains the full input datetime value.
– "Fractional" allows fractional incremental values using averages for the duration of "Year", "Quarter", and "Month" intervals.
Date MDY(month, day, year)
Description
Constructs a date value from the arguments.
Returns
The specified date, expressed as the number of seconds since midnight, 1 January 1904.
Arguments
month
The numeric month, 1-12.
day
The numeric day of month, 1-31. Note that there is no error-checking, so you can enter February 31.
year
The year.
Day(datetime)
Description
Determines the day of the month supplied by the datetime argument.
Returns
Returns an integer representation for the day of the month of the date supplied.
Arguments
datetime
The number of seconds since midnight, 1 January 1904. This can also be an expression.
Example
d1 = Date DMY( 12, 2, 2003 );
3127852800
Day( 3127852800 );
12
Day( d1 );
12
Day Of Week(datetime)
Description
Determines the day of the week supplied by the datetime argument.
Returns
Returns an integer representation for the day of the week of the date supplied. Weeks are Sunday–Saturday.
Arguments
datetime
The number of seconds since midnight, 1 January 1904. This can also be an expression.
Day Of Year(datetime)
Description
Determines the day of the year supplied by the datetime argument.
Returns
Returns an integer representation for the day of the year of the date supplied.
Arguments
datetime
The number of seconds since midnight, 1 January 1904. This can also be an expression.
Days In Month(year, month)
Description
Returns the number of days in the month for the specified month and year.
Format(x, formatString, width|<width, decimal places>, <"Use Thousands Separator">)
Format(x, "Best", <width>, <"Use Thousands Separator">)
Format(x, ("Fixed Dec"|"Percent"), width|<width, decimal places>, <"Use Thousands Separator">)
Format(x, "Pvalue", <width>)
Format(x, ("Scientific"|"Engineering"|"Engineering SI"), <width>|<width, decimal places>)
Format(x,"Precision", width|<width, decimal places>, <"Use Thousands Separator">, <"Keep Trailing Zeroes">, <"Keep All Whole Digits">)
Format(x, "Currency", <currency code>, <width>|<width, decimal places>, <"Use Thousands Separator">, < <<Use Locale(Boolean) >)
Format(x, datetime, <width>)
Format(x, ("Latitude DDD"|"Latitude DDM"|"Latitude DMS"|"Longitude DDD"|"Longitude DDM"|"Longitude DDM"), width|<width, decimal places>, ("PUN"|"DIR"|"PUNDIR"))
Format(x, "Custom", Formula(), <width>)
Description
Converts the value x into the quoted format that you specify in the subsequent arguments.
Returns
Returns the text that corresponds to the number in the specified format.
Arguments
See Numeric Formats in Using JMP for more information about the arguments. The arguments are also shown in a data table column’s Column Info window.
Examples
Format( x, "Fixed Dec", 10, 2, "Use Thousands Separator");
Format( x, "Currency", "EUR", 20, <<Use Locale(0)); // ignores computer locale
Format( x, "m/d/y", 10 );
Format( x, "Precision", 10, 2, "Keep trailing zeroes", "Keep All Whole Digits" );
Format( x, "Latitude DDD", "PUNDIR"); // "PUN" for punctuation, "DIR" for direction, PUNDIR for both
Format( x, "Custom", Formula( Abs( value ) ), 15 );
Notes
– You must always precede the number of decimal places with the width.
– If the date format is unknown, an error is written to the log.
See Also
Format Currency in the Scripting Guide
Format Date(x, datetime, <width>)
Description
Converts the value of x into the quoted datetime that you specify in the second argument. Format choices are those shown in the data table Column Info window.
Returns
Returns the number in the specified format.
Arguments
See Numeric Formats in Using JMP for more information about the arguments.
Example
Format Date( 22Feb2021, "yyyyQq" );
"2021Q1"
Hour(datetime, <"12"|"24">)
Description
Determines the hour supplied by the datetime argument.
Returns
Returns an integer representation for the hour part of the date-time value supplied.
Arguments
datetime
The number of seconds since midnight, 1 January 1904. This can also be an expression.
"12"|"24"
Changes the mode to 12 hours (with am and pm). The default is 24-hour mode.
HP Time()
Description
Returns a high precision time value (in microseconds). This function is only useful relative to another HP Time() value. The time value represents the number of microseconds since the start of the JMP session.
Notes
For less precise time values use Tick Seconds().
In Days(n)
Description
Returns the number of seconds per n days. Divide by this function to express seconds as days.
In Hours(n)
Description
Returns the number of seconds per n hours. Divide by this function to express seconds as hours.
In Minutes(n)
Description
Returns the number of seconds per n minutes. Divide by this function to express seconds as minutes.
In Weeks(n)
Description
Returns the number of seconds per n weeks. Divide by this function to express seconds as weeks.
In Years(n)
Description
Returns the number of seconds per n years. Divide by this function to express seconds as years.
Informat(string, format)
Parse Date(string, format)
Description
Parses a quoted string of a given quoted format and returns a date/time value. The value is expressed as if surrounded by the As Date() function, returning the date in "ddMonyyyy" format.
Example
Informat( "07152000", "MMDDYYYY" );
15Jul2000
Notes
– To see the format options, open the Column Info window on a data table column, select a date/time value for the format, and view the Input Format list.
– If the date format is unknown, an error is written to the log.
See Also
Date-Time Functions and Formats in the Scripting Guide
Is Leap Year(year)
Description
Returns 1 if the specified year is a leap year and 0 otherwise.
ISO Year(datetime)
Description
Returns the ISO year of the datetime supplied. ISO years correspond to ISO weeks; they begin on the Monday of the first week that contains at least four days.
Long Date(date)
Description
Returns a locale-specific quoted string representation for the date supplied, formatted like "Sunday, February 29, 2004" or "Wednesday, November 9, 2011".
See Also
Examples of Common Date-Time Functions in the Scripting Guide
MDYHMS(date)
Description
Returns a quoted string representation for the date supplied, formatted like "2/29/04 00:02:20".
Minute(datetime)
Description
Determines the minute supplied by the datetime argument, 0-59.
Returns
Returns an integer representation for the minute part of the date-time value supplied.
Month(date)
Description
Returns an integer representation for the month of the date that is supplied.
Nth Day of Week in the Month(datetime)
Description
Determines the day of the week of the datetime argument and how many instances of that day of the week have occurred in the month of the datetime argument.
Returns
Returns an integer that represents the number of instances of the day of the week of the datetime argument that have occurred in the month.
Parse Date()
Quarter(datetime)
Description
Returns the annual quarter of a datetime value as an integer 1-4.
Second(datetime)
Description
Determines the second supplied by the datetime argument.
Returns
Returns an integer representation for the second part of the date-time value supplied.
Argument
datetime
Number of seconds since midnight, 1 January 1904. This can also be an expression.
Short Date(date)
Description
Returns a quoted string representation for the date supplied in the format MM/DD/YYYY.
Tick Seconds()
Description
Measures the time taken for a script to run, measured down to the 60th of a second.
Notes
For higher time value resolution (for example, microseconds) use the HP Time() function.
Time Of Day(datetime)
Description
Returns an integer representation for the time of day of the datetime supplied.
Today()
Description
Returns the current date and time expressed as the number of seconds since midnight, 1 January 1904. No arguments are available, but the parentheses are still necessary.
See Also
Time Intervals in the Scripting Guide
Week Of Year(date, <ruleN>)
Description
Returns the week of the year that contains a date-time value. Three rules determine when the first week of the year begins.
– With rule 1 (the default), weeks start on Sunday, with the first Sunday of the year being week 2. Week 1 is a partial week or empty.
– With rule 2, the first Sunday begins with week 1, with previous days being week 0.
– With rule 3, the ISO-8601 week number is returned. Weeks start on Monday. Week 1 is the first week of the year with four days in that year. It is possible for the first or last three days of the year to belong to the neighboring year’s week number.
See Also
Rules for Determining the Week of the Year in the Scripting Guide
Year(date)
Description
Returns an integer representation for the year of date.