Gary Ng reported[1] that on Tuesday he got a notification on his Apple
TV that updated time zone information was available, and that this was
because Apple pushed out an over-the-air time zone update for Canadian
users due to recent provincial legislation in BC and Alberta.
I'm skeptical at least about the "Alberta" part, since the Alberta
changes are not yet official. Does anyone have definitive information
about this? The only public repository I found for Apple[2] is currently
based on TZDB 2025b, which is so old that it doesn't have the official
changes for British Columbia, much less the not-yet-official changes for
Alberta. I would guess the updates Ng reported are newer than 2025b.
Another possibility is that Apple's changes for Canada are about
interfacing to cell phone service providers, which are presumably having
their own issues with time zones.
[1]: Ng G. Apple Sends Overnight Time Zone Fix to Canadian iPhones.
Here’s Why. iPhone in Canada. 2026-05-27.
<https://www.iphoneincanada.ca/2026/05/27/apple-iphone-time-zone-update-canada/>
[2]: https://github.com/apple-oss-distributions/TimeZoneData/commits/main/
