Will PostgreSQL handle recent daylight saving time changes in various countries?

USA daylight saving time changes are included in PostgreSQL release 8.0.[4+], and all later major releases, e.g. 8.1. Canada and Western Australia changes are included in 8.0.[10+], 8.1.[6+], and all later major releases. PostgreSQL releases prior to 8.0 use the operating system's timezone database for daylight saving information.