> yes, Ivan, you are perfectly right, but in the United States and other
> American countries the format is mm/dd/yy (even with two figures for the
> year).

It is something equally insane as quoted identifiers :-)

> Anyway the default format in Firebird is MM/DD/YYYY

Firebird accepts several formats when converting string to date
(and it makes no sense to describe one of them as default).

Firebird uses only one format when converting from date to string (in dialect-3):
YYYY-MM-DD

Ivan