POSTGRESQL supports several features important for international use. Multibyte encoding allows non-ASCII character sets to be accurately stored in the database. It can be specified during POSTGRESQL initialization, at database creation, or inside psql. POSTGRESQL can also be installed to support international character sets, called locales.
POSTGRESQL can read and display dates in a variety of formats. The default date format can be specified as a postgres flag, using SET DATESTYLE from inside psql, or using the PGDATESTYLE environment variable.