Sunset time in Northern Finland, DJI Phantom 3 Advanced

I left my Phantom in my home village Ervasti in Pudasjärvi on May 2nd, Spring had not come to the village yet. There was a lot of snow and Ii River was almost completely frozen. Only Jaaskamonkoski had a fairway from the strongest hotspots.
I lifted my drones to the air from the bridge of Ervasti. I jumped into the car and flew over the whole village. The sun was just falling when we got up in the air, so the end of the day had clear problems due to the lack of light. I have made the perception that at these latitudes it is worth photographing at least half an hour before the sunset.