novemberkilo opened a new issue #901:
URL: https://github.com/apache/arrow-rs/issues/901
```
#[cfg(feature = "chrono-tz")]
#[test]
fn
test_temporal_array_timestamp_hour_with_dst_timezone_using_chrono_tz() {
//
// 1635577147 converts to 2021-10-30 17:59:07 in time zone
Australia/Sydney (AEDT)
// The offset (difference to UTC) is +11:00. Note that daylight
savings is in effect on 2021-10-30.
// When daylight savings is not in effect, Australia/Sydney has an
offset difference of +10:00.
let a = TimestampMillisecondArray::from_opt_vec(
vec![Some(1635577147000)],
Some("Australia/Sydney".to_string()),
);
let b = hour(&a).unwrap();
assert_eq!(17, b.value(0));
}
```
This test
[fails](https://github.com/novemberkilo/arrow-rs/commit/473e2e4eb4f3b47aa7110d1a23444647b1109665)
- it returns 16 instead of 17 and demonstrates that the offset for the
timezone is not correctly taking daylight savings into account.
__Originally posted by @novemberkilo in
https://github.com/apache/arrow-rs/pull/849#issuecomment-955647565__
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