The X12 Procedure

SAS Predefined Events

SAS predefined events are summarized in this section. For complete details about SAS predefined events, see the section “EVENTKEY Statement” in Chapter 8: The HPFEVENTS Procedure in SAS High-Performance Forecasting 12.1 User's Guide.

Table 38.11 shows a summary of the SAS predefined event keywords. Table 38.12 lists the holiday date keywords that can be used as SAS predefined events. Table 38.13 lists the seasonal date keywords that can be used as SAS predefined events.

Table 38.11: Definitions for EVENTKEY Predefined Event Keywords

Variable Name or	Description	Qualifier Options
Variable Name Format
AO<obs>OBS	Outlier	TYPE=POINT VALUE=1
AO<date>D		BEFORE=(DURATION=0)
AO<datetime>DT		AFTER=(DURATION=0)
LS<obs>OBS	Level shift	TYPE=LS VALUE=1
LS<date>D		BEFORE=(DURATION=0)
LS<datetime>DT		AFTER=(DURATION=ALL)
TLS<obs>OBS<n>	Temporary level shift	TYPE=LS VALUE=1
TLS<date>D<n>		BEFORE=(DURATION=0)
TLS<datetime>DT<n>		AFTER=(DURATION=<n>)
NLS<obs>OBS	Negative level shift	TYPE=LS VALUE=–1
NLS<date>D		BEFORE=(DURATION=0)
NLS<datetime>DT		AFTER=(DURATION=ALL)
CBLS<obs>OBS	U.S. Census Bureau level shift	TYPE=LS VALUE=–1
CBLS<date>D		SHIFT=–1
CBLS<datetime>DT		BEFORE=(DURATION=ALL)
		AFTER=(DURATION=0)
TC<obs>OBS	Temporary change	TYPE=TC VALUE=1
TC<date>D		BEFORE=(DURATION=0)
TC<datetime>DT		AFTER=(DURATION=ALL)
<date keyword>	Date pulse	TYPE=POINT VALUE=1
		BEFORE=(DURATION=0)
		AFTER=(DURATION=0)
		PULSE=DAY
LINEAR	Polynomial	TYPE=LIN
QUAD	trends	TYPE=QUAD
CUBIC		TYPE=CUBIC
		VALUE=1 BEFORE=(DURATION=ALL)
		AFTER=(DURATION=ALL)
		The default timing value is the 0 observation.

INVERSE	Trends	TYPE=INV
LOG		TYPE=LOG
		VALUE=1 BEFORE=(DURATION=0)
		AFTER=(DURATION=ALL)
		The default timing value is the 0 observation.
<seasonal	Seasonal	TYPE=POINT
keywords>		PULSE= depends on keyword
		VALUE=1 BEFORE=(DURATION=0)
		AFTER=(DURATION=0)
		Timing values are based on keyword.

Table 38.12: Holiday Date Keywords and Definitions

Date Keyword	Definition
BOXING	December 26th
CANADA	July 1st
CANADAOBSERVED	July 1st, or July 2nd if July 1st is a Sunday
CHRISTMAS	December 25th
COLUMBUS	Second Monday in October
EASTER	Easter Sunday
FATHERS	Third Sunday in June
HALLOWEEN	October 31st
LABOR	First Monday in September
MLK	Third Monday in January
MEMORIAL	Last Monday in May
MOTHERS	Second Sunday in May
NEWYEAR	January 1st
THANKSGIVING	Fourth Thursday in November
THANKSGIVINGCANADA	Second Monday in October
USINDEPENDENCE	July 4th
USPRESIDENTS	Third Monday in February (since 1971)
VALENTINES	February 14th
VETERANS	November 11th
VETERANSUSG	Veterans Day date that is observed by
	U.S. government for
	Monday–Friday schedule
VETERANSUSPS	Veterans Day date that is observed by
	U.S. government for
	Monday–Saturday schedule
	(U.S. Post Office)
VICTORIA	Monday on or preceding May 24th

Table 38.13: Seasonal Date Keywords and Definitions

Date Keyword	Definition
SECOND_1, …, SECOND_60	Specified second
MINUTE_1, …, MINUTE_60	Beginning of the specified minute
HOUR_1, …, HOUR_24	Beginning of the specified hour
SUNDAY, …, SATURDAY	All Sundays, and so on, in the time series
WEEK_1, …, WEEK_53	First day of the th week of the year
	(PULSE=WEEK.n shifts this date for $n \neq 1$ )
TENDAY_1, TENDAY_4,	The st of the month
…, TENDAY_34
TENDAY_2, TENDAY_5,	The th of the month
…, TENDAY_35
TENDAY_3, TENDAY_6,	The st of the month
…, TENDAY_36
SEMIMONTH_1, SEMIMONTH_3,	The st of the month
…, SEMIMONTH_23
SEMIMONTH_2, SEMIMONTH_4,	The th of the month
…, SEMIMONTH_24
JANUARY, …, DECEMBER	The 1st of the specified month
QTR_1, QTR_2, QTR_3, QTR_4	The first date of the quarter indicated after the underscore
	(PULSE=QTR.n shifts this date for $n \neq 1$ )
SEMIYEAR_1, SEMIYEAR_2	The first date of the semiyear
	(PULSE=SEMIYEAR.n shifts this date for $n \neq 1$ )