Advice for your NZ tourism Experience: #8
The NZ minute was tied to the Imperial scale until a well-intentioned move to the metric system in 1967. It was subsequently devalued and revalued according to the whims of politicians, and was fixed at the 80-minute hour for most of the 1980s.
That became unsustainable in 1992. Since then the NZ minute has been freely convertible with the exchange rate determined by the currency market. For a while 90 NZ minutes was the equivalent of only about half-an-hour in UK Time Sterling, but it has strengthened and at the current exchange rate it's more like 45 UK minutes.
In an unexpected side-effect of tampering with the laws of physics, all the silly-buggers with chronology has caused the speed of light to slow down dramatically, to the extent that inter-city trains reach sufficient speed to experience relativistic distortion.
Only Lorentz-Fitzgerald contraction is available by train. Due to the backwardness of rural NZ, the effects are not updated to include Penrose-Terrell Rotation. To experience the full panoply of relativistic Penrose distortions you must travel by intra-city rapid transit.
Belatedly UPDATED with Bonus Relativistic Effects.