The 21st Century and the 3rd Millennium "The 21st Century and the 3rd Millennium" U.S. Naval Observatory The 21st Century and the 3rd Millennium http://aa.usno.navy.mil/faq/docs/millennium.php The 21st Century and the 3rd Millennium. http://aa.usno.navy.mil/faq/docs/millennium.php The 21st Century and the 3rd Millennium. The 21st Century and the 3rd Millennium The 21st Century and the 3rd Millennium "The 21st Century and the 3rd Millennium" "The 21st Century and the 3rd Millennium" "The 21st Century and the 3rd Millennium" The 21st Century and the 3rd Millennium The 21st Century and the 3rd Millennium U.S. Naval Observatory The 21st Century and the 3rd Millennium "The 21st Century and the 3rd Millennium" The 21st Century and the 3rd Millennium The 21st Century and the 3rd Millennium http://aa.usno.navy.mil/faq/docs/millennium.php