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Historical clock change

Azores TV guide clock change on 26 October 2025

The local time 00:30 on 26 October 2025 is repeated in Atlantic/Azores. Use an explicit offset when mapping the affected programme.

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The local time 00:30 on 26 October 2025 is repeated in Atlantic/Azores. Use an explicit offset when mapping the affected programme.

What the time zone rules produce

Historical IANA example for Atlantic/Azores with a 60-minute wall-clock change.
MomentLocal schedule timeUTC
One second before the change2025-10-26 00:59:59 +002025-10-26 00:59:59 UTC
At the change2025-10-26 00:00:00 -012025-10-26 01:00:00 UTC

The same wall time refers to two instants

Both examples show 00:30 in Atlantic/Azores on the named date.
Explicit XMLTV-style startCorresponding UTC
20251026003000 +00002025-10-26 00:30:00 UTC
20251026003000 -01002025-10-26 01:30:00 UTC

If the EPG shows the wrong slot

Keep the original offset or UTC instant to determine which showing the source means. A global offset would move unrelated programmes.

Sources and further reading