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

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 6.0.0
• Component/s: C++
• Labels: pull-request-available timestamp timezone
• External issue URL: https://github.com/apache/arrow/issues/28744
• Assignee: Rok Mihevc
• Reporter: Joris Van den Bossche
• Created: 10/Jun/21 09:57
• Updated: 11/Jan/23 08:30
• Resolved: 09/Sep/21 13:59

Description

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 in pandas, or force_tz in R's lubridate package

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

Issue Links

• is a child of: ARROW-8894 [C++] C++ array kernels framework and execution buildout (umbrella issue)
• relates to: ARROW-17935 [C++] Kernel to convert timestamp with timezone to wall time
• links to: GitHub Pull Request #10610