@Bonito in the detail of the location is shown the time of the location you are looking at. So if you open the detail of Sydney than in detail is Sydney's time zone. The bottom red calendar shows your computer time, so in your case Copenhagen's time zone.
Have look here https://community.windytv.com/topic/5/what-timezone-is-used-at-windytv
we are sorry to hear that. However, we have no plans to develop Windytv for Windows Phone. The market share of WP is too low, and we don't have any spare developers. So we stay concentrating on iPhone and Android. Maybe in the future when WP will significantly increase their market share.