*** This is no longer an issue with my weather app of choice. ***
It seems Yahoo! Weather app is not daylight savings aware. Its clock is running an hour late as I spotted just now. It erroneously shows NZST rather than NZDT.
Thankfully I don’t use weather app to track the sun. I reckon, so must be most people. However it’s a rough edge on an otherwise immaculately designed app.
Your Groovy Site 
What do you think?