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https://issues.apache.org/jira/browse/ARROW-413?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15746169#comment-15746169
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Julian Hyde commented on ARROW-413:
-----------------------------------

I think you have to specify semantics. Does a date value represent an instant 
(implicitly an offset from the UTC epoch) or is it a timezone-less value that 
each person can interpret in whichever timezone they want (say, their local 
timezone).

> DATE type is not specified clearly
> ----------------------------------
>
>                 Key: ARROW-413
>                 URL: https://issues.apache.org/jira/browse/ARROW-413
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Format
>    Affects Versions: 0.1.0
>            Reporter: Uwe L. Korn
>
> Currently the DATE type is not specified anywhere and needs to be documented.



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