>>>Time for an extremely stupid question -- is there any particular reason why you have
>>>SET CENTURY TO 20
>>>instead of
>>>SET CENTURY TO 19
>>
>>Thanks. It seems that this was the solution to the riddle. Setting it to 19, I get the correct date. Why the setting is so, I have no idea - Visual ProMatrix set it automatically. (Nor do I have any clear idea why, according to Visual FoxPro, I should set century to 19, when we are actually in the 21st century...)
>
>It's zero based.
>
>IOW, the XX century is "all the years written as 19nn, including 2000 but excluding 1900", so this "set century to 19" is actually "set the hundreds part of the year to 19". The word century here is a complete misnomer.

Even with these non-standard definitions, I would expect to have to specify the "century" as 20, since that's the "century" we are in, i.e., the current year starts with 20. But when I do that, I get a year that starts with 21 - so, a year in the 21st "century" according to the logic you explained. However, perhaps the ROLLOVER somehow adds one more digit to the century.