[jira] [Created] (ARROW-13033) [C++] Kernel to localize naive timestamps to a timezone (preserving clock-time)

["Joris Van den Bossche (Jira)" <ji...@apache.org>]

Joris Van den Bossche created ARROW-13033:
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             Summary: [C++] Kernel to localize naive timestamps to a timezone (preserving clock-time)
                 Key: ARROW-13033
                 URL: https://issues.apache.org/jira/browse/ARROW-13033
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
            Reporter: Joris Van den Bossche


Given a tz-naive timestamp, "localize" would interpret that timestamp as local in a given timezone, and return a tz-aware timestamp keeping the same "clock time" (the same year/month/day/hour/etc in the printed representation). Under the hood this converts the timestamp value from that timezone to UTC, since tz-aware timestamps are stored as UTC.

References: [tz_localize|https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DatetimeIndex.tz_localize.html] in pandas, or [force_tz|https://lubridate.tidyverse.org/reference/force_tz.html] in R's lubridate package

This will (eventually) also have to deal with ambiguous or non-existing times.



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