[tz] Politics of TZ changes

[Clive D.W. Feather]

Zoidsoft said:
> I wonder how they keep aircraft from landing on top of each other on the
> runway when the skip forward or back?

Operations are normally done in UTC.

Airlines often simply shift the local-clock flight times so as to keep
the UTC times the same, particularly for international flights. A look at
airline timetables will often show this.

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