There about 4 years since Pacific/Apia timezone has been switched from GMT-11, to GMT+13. However checked on MacOsX 10.9, and latest 10.10, there are still problems with CFTimeZoneCopyLocalizedName, that reports old timezone offset. Also system time zone utility shows same thing that makes me thing that icu4c.
Similar issues were discussed on google groups and initialy android code contains WA because of ICU4c problems. Current code doesnt have any WA. They either use updated icu4c or customized dat file, i'm not sure.
https://android.googlesource.com/platform/libcore/+/77a1f19296d34e6ab74f044f56fa8a0aaa0e6619%5E!/
So the question is when we can expect fix for that timezone from Apple, since it can affect any samoa users of MacOs?