Corticon's Date attribute operators are as follows:

Name and Syntax Returns Description
Equals (used as a comparison)
<Date1> = <Date2> Boolean Returns a value of true if <Date1> is the same as <Date2>.
Equals (used as an assignment)
<Date1> = <Date2> DateTime Assigns the value of <Date2> to <Date1>
Not Equal To
<Date1> <> <Date2> Boolean Returns a value of true if <Date1> does not equal <Date2>
Less than
<Date1> < <Date2> Boolean Returns a value of true if <Date1> is less than <Date2>
Greater than
<Date1> > <Date2> Boolean Returns a value of true if <Date1> is greater than <Date2>
Less than or Equal to
<Date1> <= <Date2> Boolean Returns a value of true if <Date1> is less than or equal to <Date2>
Greater than or Equal to
<Date1> >= <Date2> Boolean Returns a value of true if <Date1> is greater than or equal to <Date2>
In (Range)
attributeReference in [ |(rangeExpression)|] Boolean Returns a value of true if attributeReference is in the range of Date values from..to, and where opening and closing parentheses ( )indicate exclusion of that limit and square brackets [ ] indicate inclusion of that limit.
In (List)
attributeReference in {listExpression} Boolean Returns a value of true if attributeReference is in the comma-delimited list of literal values, defined enumeration values, or - if in use - enumeration labels.
Year
<Date>.year Integer Returns the century/year portion of <Date> as a four digit Integer
Month
<Date>.month Integer Returns the month in <Date> as an Integer between 1 and 12
Day
<Date>.day Integer Returns the day portion of <Date> as an Integer between 1 and 31
Add years
<Date>.addYears(<Integer>) Date Adds the number of years in <Integer> to the number of years in <Date>
Add months
<Date>.addMonth(<Integer>) Date Adds the number of months in <Integer> to the number of months in <DateTime>
Add days
<Date>.addDays(<Integer>) Date Adds the number of days in <Integer> to the number of days in <Date>
Years between
<Date1>.yearsBetween(<Date2>) Integer Returns the Integer number of years between <Date1> and <Date2>. This function returns a positive number if <Date2> is later than <Date1>.
Months between
<Date1>.monthsBetween(<Date2>) Integer Returns the Integer number of months between <Date1> and <Date2>. If the month and year portions of <Date1> and <Date2> are the same, the result is zero. This function returns a positive number if <Date2> is later than <Date1>.
Days between
<Date1>.daysBetween(<Date2>) Integer Returns the Integer number of days between <Date1> and <Date2>. If the two dates differ by less than a full 24-hour period, the value is zero. This function returns a positive number if <Date2> is later than <Date1>.
Day of Week
<Date>.dayOfWeek Integer Returns an Integer corresponding to day of the week, with Sunday equal to 1, in <Date>.
Week of Year
<Date>.weekOfYear Integer Returns an Integer from 1 to 52, equal to the week number within the year in <Date>
Day of Year
<Date>.dayOfYear Integer Returns an Integer from 1 to 366, equal to the day number within the year in <Date>
Week of Month
<Date>.weekOfMonth Integer Returns an Integer from 1 to 6, equal to the week number within the month in <DateTime> or <Date>. A week begins on Sunday and ends on Saturday.
To String
<Date>.toString String Converts Date to a String with date and time information
To DateTime
<Date>.toDateTime DateTime Returns a DateTime where the date portion is equal to the value of <Date> and the time portion is equal to 00:00:00 in the system’s local timezone
getMilliseconds
<Date>.getMilliseconds Integer Returns the internal date/time, namely the number of milliseconds that have transpired since the epoch 1/1/1970 00:00:00 GMT.
nextDay
<Date>.nextDay Date Returns the Date that represents the date that follows this Date instance.