Artifact CommonsThe 2026 Clock-Change Calendar
A dated reference for anticipating coordinated clock changes across named zones.
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What it shows
- 216: encoded transitions this year
- 107: canonical zones affected
- 18: distinct UTC transition dates
A shared local transition date can occur on different UTC dates. Use the exact transition instant when interpreting events.
Method
All explicit TZif transitions in the source snapshot calendar year, including planned dates after retrieval. Counts describe canonical zones, not people or countries. Governments can revise future rules.
Sources and reuse
IANA tzdb 2026c. Public domain.
Source retrieval: 2026-09-08 UTC. This is a fixed edition. Observation dates and coverage differ by source.
Inspect the immutable input snapshot for provenance and source terms. The complete bundle includes license notices and source metadata. Arcomm permits reuse and adaptation of its layouts and explanatory text with attribution. Upstream terms apply to source-derived content.