I can hear the start-up of 777 engines at the airport, every night at approx. the same time. The airport is 12 km from my apartment and there's a hill in betwee

I can hear the start-up of 777 engines at the airport, every night at approx. the same time. The airport is 12 km from my apartment and there's a hill in between. But my bedroom is facing the airport side and the wind mostly comes from that direction. It's crazy.