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This is to inform you that current versions of the seasonal adjustment programs distributed by the Census Bureau (X-12-ARIMA, X-11.2, and X-11Q.2) meet the requirements for Year 2000 compliance.
Previous versions of X-11.2 and X-11Q.2 distributed by the Census Bureau are not Year 2000 compliant. Users of these programs should download the latest version of the software from the Census Bureau FTP site at the following URL:
The above URL represents the final revisions of the X-11.2 and X-11Q.2 programs. These programs are no longer supported by the Census Bureau; only the current version of X-12-ARIMA will be supported.
The PC version of X-12-ARIMA can be downloaded from the following URL:
The X-12-ARIMA, X-11.2, and X-11Q.2 seasonal adjustment programs have been tested with the clock date set beyond January 1, 2000 without any interruptions in operation.
All routines related to calendar functionality (trading day and holiday estimation, for example) have been rewritten to utilize four digit years. These algorithms have been checked to verify that they will run correctly after the year 2000. These routines also correctly recognize the year 2000 as a leap year.
Holiday adjustment can now be performed for series defined between the years 1901 and 2100, inclusive.
For more information, contact Brian C. Monsell at firstname.lastname@example.org.