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Historical clock change

Havana TV guide clock change on 02 November 2025

The local time 00:30 on 02 November 2025 is repeated in America/Havana. Use an explicit offset when mapping the affected programme.

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The local time 00:30 on 02 November 2025 is repeated in America/Havana. Use an explicit offset when mapping the affected programme.

What the time zone rules produce

Historical IANA example for America/Havana with a 60-minute wall-clock change.
MomentLocal schedule timeUTC
One second before the change2025-11-02 00:59:59 CDT2025-11-02 04:59:59 UTC
At the change2025-11-02 00:00:00 CST2025-11-02 05:00:00 UTC

The same wall time refers to two instants

Both examples show 00:30 in America/Havana on the named date.
Explicit XMLTV-style startCorresponding UTC
20251102003000 -04002025-11-02 04:30:00 UTC
20251102003000 -05002025-11-02 05:30:00 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