Polars and time zones: everything you need to know
summary
Claim: never handle time zones manually; use Polars and let it do the hard work. Shows concrete tools: dt.offset_by(4H) to add four hours and get 00:00 → 05:00 across DST, replace_time_zone versus convert_time_zone for local vs equivalent instants, and the difference between 1d (calendar day) and 24h (fixed duration). Demonstrates CSV parsing with try_parse_dates and warns that offset‑aware strings normalize to UTC unless a local zone is set.
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chapters (7)
- 0:00Manual time zone handling fails
- 7:30Polars date time crash course
- 14:55Polars time zone functions
- 19:56UTC conversion pitfalls
- 21:20Reading time zone CSV
- 23:30Key takeaways
- 24:12Q&A
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