Canada is about to break your scheduler
At 2:00 AM on 1 November 2026, DST ends for Canada. However, DST will not end in British Columbia, Alberta, the Northwest Territories, and Manitoba starting from this shift. Each of the above announced at separate times that they will stop moving their clocks. Where Zone Decided Days before 1 November First tz release with it British Columbia America/Vancouver announced 2 March, in effect 9 March…
On 1 November 2026, Canada will switch to permanent daylight time, skipping the end of Daylight Saving Time (DST). However, this change will not apply to British Columbia, Alberta, the Northwest Territories, and Manitoba. Each of these regions has decided to stop observing DST. DST will end first in British Columbia on 9 March 2026, followed by Alberta on 18 June 2026, the Northwest Territories on 21 August 2026, and Manitoba on 11 September 2026.
The political decision to make DST permanent is causing numerous issues for computer systems, particularly schedulers and cron jobs. The tz project requests a year's notice for updates, but most regions have only provided six weeks' notice. This change will likely break various time-related systems, as timestamps are often stored in UTC and zone information varies greatly across different programming languages and systems.
For example, Go uses the tzdata built into the OS, Python's zoneinfo does the same, and .NET on Linux and Ruby's tzinfo also rely on the data. Each of these languages and systems has its own method of handling timezones and zone information, making the transition more complicated.
Written by urgent.news from Dev.to's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
