The timezone usage was not correct (using the timezone as an
argument of the datetime constructors won't work with timezones
with daylight saving time according to documentation).
Coverage remained the same when pulling e981b9d52345406b5ce92c055ca0a388a8047775 on nud:fix-tz-test into 3cdb335545e4a1f722453a086a6be9193e08af79 on linkedin:master.
Coverage remained the same when pulling 10eceec6dcf5cf7c1f661651501af2a657f32186 on nud:fix-tz-test into 3cdb335545e4a1f722453a086a6be9193e08af79 on linkedin:master.
The test had two flaws: