tz database iana.org ↗
The IANA-maintained database of world time zone rules and history.
LibraryDev toolstimezonesdatetimeopen-data
Recommended in 1 thread
Cuba is skipping its November 1, 2026 clock change and staying on DST until 2027timeanddate.com ·
Commenters noted it had already been updated for Cuba's change, and correct storage of wall time plus zone makes such changes painless.
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Link from a commenter, not checked or endorsed by us: ↗ https://www.iana.org/time-zones/releases/2026f