!Century_Divider

The !Century_Divider system variable is intended to help ensure that two-digit-year format dates do not adversely affect existing PV‑WAVE applications. This is intended as a temporary solution to the year 2000 problem. We recommend that all PV‑WAVE code be updated with four-digit year dates.

If set to –1 (the default), PV‑WAVE behaves as in versions before 6.21. That is, any date in a two-digit year format is interpreted as being between January 1, 1901 and December 31, 1999. Furthermore, when !Century_Divider is set to –1, a two-digit year of 00 is interpreted as Julian date zero (September 9, 1752). For more information on how dates are handled in PV‑WAVE, refer to the section Working with Date/Time Data, in the PV‑WAVE User Guide.

If set in the range {0–99}, the !Century_Divider value represents the maximum of the hundred year span encompassed by two-digit year dates. In other words, if !Century_Divider is set to 35, then all two-digit year dates encountered in PV‑WAVE are interpreted to be in the range {1935..2034}. Therefore, the date 01-31-35 refers to January 31, 1935; 01-31-99 refers to January 31, 1999; and 01-31-34 refers to January 31, 2034.

If !Century_Divider is set to 0 or a value greater than 99, the two-digit year is added to 2000.