There's fallback logic which is fairly involved. en.xml contains the data for American English, hence it has short names for American zones. Most English variants fall back to en_001.xml first, which is "world English" with British spelling (en_GB has country specific data for the United Kingdom, so it shouldn't be in the fallback chain for other countries). en_001 and other locales that fall back to en block the fallback to American short zone names ( https://github.com/unicode-org/cldr/blob/main/common/main/en_001.xml#L983).
On Tue, 10 Mar 2026 at 11:42, Guy Harris <[email protected]> wrote: > On Mar 10, 2026, at 3:32 AM, Robert Bastian <[email protected]> > wrote: > > It does for Australian English: > https://github.com/unicode-org/cldr/blob/main/common/main/en_AU.xml#L4964 > > > And in > https://github.com/unicode-org/cldr/blob/main/common/main/en.xml#L4491 as > well; what does that do for English in other locales? > >
