SAS/Ets User's Guide 15. Provides detailed reference material for using SAS/ETS software and guides you through the analysis and forecasting of features such as univariate and multivariate time series, cross-sectional time series, seasonal adjustments, multiequational nonlinear models, discrete choice models, limited dependent variable models, portfolio analysis, and generation of financial reports, with introductory and advanced examples for each procedure. You can also find complete information about two easy-to-use point-and-click applications: the Time Series Forecasting System, for automatic and interactive time series modeling and forecasting, and the Investment Analysis System, for time-value of money analysis of a variety of investments | 132 F Chapter 4 Date Intervals Formats and Functions MONTH specifies monthly intervals. Abbreviations are MONTH MONTHS MONTHLY and MON. The starting subperiod 5 is in months MONTH . For example intervals are February-March April-May June-July August-September October-November and December-January of the following year. R445MON specifies retail 4-4-5 monthly intervals. The 3rd 6th 9th and 12th months are five ISO 8601 weeks long with the exception that some 12th months contain leap weeks. All other months are four ISO 8601 weeks long. R445MON intervals begin with the 1st 5th 9th 14th 18th 22nd 27th 31st 35th 40th 44th and 48th weeks of the ISO year. The starting subperiod 5 is in retail 4-4-5 months R445MON . R454MON specifies retail 4-5-4 monthly intervals. The 2nd 5th 8th and 11th months are five ISO 8601 weeks long. All other months are four ISO 8601 weeks long with the exception that some 12th months contain leap weeks. R454MON intervals begin with the 1st 5th 10th 14th 18th 23rd 27th 31st 36th 40th 44th and 49th weeks of the ISO year. For a discussion of the retail 4-5-4 calendar see National Retail Federation 2007 . The starting subperiod 5 is in retail 4-5-4 months R454MON . R544MON specifies retail 5-4-4 monthly intervals. The 1st 4th 7th and 10th months are five ISO 8601 weeks long. All other months are four ISO 8601 weeks long with the exception that some 12th months contain leap weeks. R544MON intervals begin with the 1st 6th 10th 14th 19th 23rd 27th 32nd 36th 40th 45th and 49th weeks of the ISO year. The starting subperiod 5 is in retail 5-4-4 months R544MON . SEMIMONTH specifies semimonthly intervals. SEMIMONTH breaks each month into two periods starting on the 1st and 16th days. Abbreviations are SEMIMONTH SEMIMONTHS SEMIMONTHLY and SEMIMON. The starting subperiod 5 is in SEMIMONTH periods. For example specifies intervals from the 16th of one month through the 15th of the next month. TENDAY specifies 10-day intervals. TENDAY .
