[ARROW-378] Python: Respect timezone on conversion of Pandas datetime columns

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Component/s: Python
• Labels: newbie
• External issue URL: https://github.com/apache/arrow/issues/15951
• Assignee: Jim Ahn
• Reporter: Uwe Korn
• Created: 15/Nov/16 21:19
• Updated: 11/Jan/23 07:08
• Resolved: 21/Jan/17 16:19

Description

Currently we convert columns irrespectively of their timezone directly to timestamps in Arrow. While in Pandas you are able to specify timezones, in Arrow we have the assumptions that a Timestamp is always the time of the specified unit since 00:00:00.000 on 1 January 1970, UTC. Thus we have to check if df['column‘].tz is set and convert if necessary to UTC before converting to an Arrow column.