Citrix Systems 9.2 manual Expressions for SSL Certificate Dates, Time2

Chapter 5 Advanced Expressions: Working with Dates, Times, and Numbers 101

Expressions that Return NetScaler System Dates and Times

NetScaler Time	Description
Operation
SYS.TIME.	Calculates the number of seconds between the current
RELATIVE_NOW	NetScaler system time and the specified time, and returns an
	integer showing the difference.
	If the designated time is in the past, the integer is negative; if it
	is in the future, the integer is positive.
SYS.TIME.SECONDS	Extracts the seconds from the current NetScaler system time,
	and returns that value as an integer from 0 to 59.
SYS.TIME.WEEKDAY	Returns the current weekday as a value from 0 (Sunday) to 6
	(Saturday).
SYS.TIME.WITHIN	Returns a Boolean TRUE if all time elements (day, hour, and so
(time1, time2)	on) exist within the range defined by time1, time2. If you
	omit an element of time in time1, for example, the day or hour,
	it is assumed to have the lowest value in its range. If you omit
	an element in time2, it is assumed to have the highest value of
	its range.
	The ranges for the elements of time are as follows: month 1-12,
	day 1-31, weekday 0-6, hour 0-23, minutes 0-59 and seconds 0-
	59. If you specify the year, you must do so in both time1 and
	time2.
	For example, if the time is GMT 2005 May 10 10h 15m 30s,
	and it is the second Tuesday of the month, you can specify the
	following (evaluation results are shown in parentheses):
	• sys.time.within(GMT 2004, GMT 2006)
		(TRUE in this example.)
	•	sys.time.within(GMT 2004 Jan, GMT 2006
		Mar) (FALSE, May is not in the range of January to
		March.)
	•	sys.time.within(GMT Feb, GMT) (TRUE, May
		is in the range of February to December.)
	• sys.time.within(GMT Sun_1, GMT Sun_3)
		(TRUE, the second Tuesday is between the first Sunday
		and the third Sunday.)
	•	sys.time.within(GMT 2005 May 1 10h, GMT
		May 2005 1 17h) (TRUE in this example.)
	•	sys.time.within(LOCAL 2005 May 1, LOCAL
		May 2005 1) (TRUE or FALSE, depending on the
		NetScaler system time zone.)
SYS.TIME.YEAR	Extracts the year from the current system time and returns that
	value as a four-digit integer.

Expressions for SSL Certificate Dates

You can determine the validity period for SSL certificates by configuring an expression that contains the following prefix: