Everywhere but Saskatchewan AFAIK. Anyway, either way you wouldn't have to change it manually. Just uncheck the "Automatically adjust clock for daylight saving changes" checkbox under the Time Zone tab for places that don't do it.
Just for the record, things are not so simple on the AV, which is what I presume has Greg confused. The AV doesn't have any nonvolatile memory, and its clock chip is not very bright. With the AV the change to daylight savings time has always been a pain given its proximity to the Nov elections.