When were these photographs shot?

Photographer Mike Kelley goes around the world taking pictures of airplanes when they take off and land. He basically sets up a camp outside the airports to do this, says This Is Colossal. The journey had been smooth for Kelly when he was shooting in European countries and America where there is a regular weather pattern. Countries like Japan gave him a hard time since the weather conditions were erratic. Sometimes, he has had to leave a country without a single good picture. He takes aircrafts from many pictures and puts them into one, giving an illusion that all the planes are moving at the same time.