What are the correct and accurate prayer times for the city of Vaasa in Finland?

We do not have knowledge of the prayer times in your city. The fundamental way to know prayer times is through the شرعية (Shar'i) signs, such as the shadow signs for the Dhuhr and Asr prayers, the sunset for Maghrib, the disappearance of the red afterglow for Isha, and the true dawn for Fajr. If this is difficult, one can rely on specialized websites that provide approximate prayer times.