Re: [I] [C++][Python] `cast` with timezone-aware array inconsistent when casting to `timestamp` and `date32` [arrow]

["xhochy (via GitHub)" <gi...@apache.org>]

xhochy commented on issue #46738:
URL: https://github.com/apache/arrow/issues/46738#issuecomment-3404908463

   The relevant section in the standard should be https://github.com/apache/arrow/blob/7b8e3e88f6e87437e821ccf15c3ff6f60a8d0ae1/format/Schema.fbs#L277. From reading that, I would infer that `print(pc.strftime(arr.cast(pa.date32()), '%Y-%m-%d'))` is correct, i.e. the local timezone should be used.
   
   But, looking at https://github.com/apache/arrow/blob/7b8e3e88f6e87437e821ccf15c3ff6f60a8d0ae1/format/Schema.fbs#L327, it also seems that the `timestamp` case is correct. This seems quite counterintuitive to me, but the cast here seems to work as a "reinterpret" instead of actually updating the underlying values.


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