Historical clock change

St Johns TV guide clock change on 09 March 2025

The local time 02:30 on 09 March 2025 is skipped in America/St_Johns. Use an explicit offset when mapping the affected programme.

The local time 02:30 on 09 March 2025 is skipped in America/St_Johns. Use an explicit offset when mapping the affected programme.

What the time zone rules produce

Historical IANA example for America/St_Johns with a 60-minute wall-clock change.
MomentLocal schedule timeUTC
One second before the change2025-03-09 01:59:59 NST2025-03-09 05:29:59 UTC
At the change2025-03-09 03:00:00 NDT2025-03-09 05:30:00 UTC

The missing wall time cannot represent a programme instant

The clock moves from 02:00 to 03:00 at the boundary. Round-tripping 02:30 from local time through UTC finds no matching instant.

If the EPG shows the wrong slot

Ask for a corrected local time or the explicit UTC instant. Check the exporter before shifting the whole guide.

Sources and further reading