Function polars::chunked_array::temporal::parse_fixed_offset

pub fn parse_fixed_offset(tz: &str) -> Result<String, PolarsError>

Available on (crate features temporal or dtype-datetime or dtype-date) and crate feature timezones only.

Convert fixed offset to Etc/GMT one from time zone database

E.g. +01:00 -> Etc/GMT-1

Note: the sign appears reversed, but is correct, see https://en.wikipedia.org/wiki/Tz_database#Area:

In order to conform with the POSIX style, those zone names beginning with “Etc/GMT” have their sign reversed from the standard ISO 8601 convention. In the “Etc” area, zones west of GMT have a positive sign and those east have a negative sign in their name (e.g “Etc/GMT-14” is 14 hours ahead of GMT).