Century window

A century window is a 100-year interval within which any two-digit year is unique.

There are several ways to specify a century window in a COBOL program:

  • For windowed date fields, a century window is specified by the YEARWINDOW compiler option.
  • For windowing intrinsic functions DATE-TO-YYYYMMDD, DAY-TO-YYYYDDD, and YEAR-TO-YYYY, a century window is specified by argument-2.