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https://issues.apache.org/jira/browse/ARROW-637?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15928794#comment-15928794
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Wes McKinney commented on ARROW-637:
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[~julianhyde] This is a metadata-only time zone, so a single timezone for the
entire array, not a different timezone for each value. I've occasionally seen
demand for having a time zone for each value but I don't think it's high
priority.
If you can look at the changes in
https://github.com/apache/arrow/pull/388/files#diff-520b20e87eb508faa3cc7aa9855030d7R97
and confirm this looks semantically correct
> [Format] Add time zone metadata to Timestamp type
> -------------------------------------------------
>
> Key: ARROW-637
> URL: https://issues.apache.org/jira/browse/ARROW-637
> Project: Apache Arrow
> Issue Type: New Feature
> Components: Format
> Reporter: Wes McKinney
> Assignee: Wes McKinney
>
> As a metadata-only convenience, it would be useful to have an optional Olson
> time zone name in the {{Timestamp}} flatbuffers type:
> https://github.com/apache/arrow/blob/master/format/Message.fbs#L94
> Null or length-0 string would indicate that the data has no time zone (UTC)
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