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https://issues.apache.org/jira/browse/ARROW-5545?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16860202#comment-16860202
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Wes McKinney commented on ARROW-5545:
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Reopening. I think the C++ header files should make it clear what is expected,
this seems like an opportunity to improve them
> [C++][Docs] Clarify expectation of UTC values for timestamps with time zones
> in C++ API docs
> --------------------------------------------------------------------------------------------
>
> Key: ARROW-5545
> URL: https://issues.apache.org/jira/browse/ARROW-5545
> Project: Apache Arrow
> Issue Type: Improvement
> Reporter: TP Boudreau
> Priority: Trivial
> Labels: documentation
> Fix For: 0.14.0
>
>
> For timestamp datatypes, if the timezone parameter is non-empty, the int64
> array values in the associated column are assumed to be normalized to UTC.
> This requirement should be made clear to the C++ API user. (It can be
> inferred from the flatbuffers schema, but that internal implementation
> document probably wouldn't ordinarily be consulted by a C++ API consumer.)
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