This article is from the ER FAQ, by Rose Cooper firstname.lastname@example.org with numerous contributions by others.
Australian television airs "ER" on Channel 9 on Thursdays
at 9:30 pm. Their second season run appears to be about five
episodes behind the U.S.
Some (possibly most) Latin American countries show a
"ER" dubbed in Spanish on open-air television, and an English
version with Spanish subtitles on cable (Sony).
[NOTE: Since I have received conflicting information from multiple
sources about "ER" in Latin American countries, and this is the
only agreed-upon information, this is how I will leave it].