Date and Time Constants
Since these constants are built into VBScript, you don't have to define them before using them. Use them anywhere in your code to represent the values shown for each.
Use the day of the week specified in your system settings for the first day of the week.
Use the week in which January 1 occurs (default).
Use the first week that has at least four days in the new year.
Use the first full week of the year.