The point is Spassk's district of Primorskiy Krai where the original scene to be located is 250+ sunny days a year. It is reasonable amount for solar energy, and appropriate calculations were previously made.
By the way, twice a month traveling on train between Vladivostok and Khavarovsk, and there is a night stop in this district. Always watching constellations while having a smoke no matter summer or winter.;Ds
Upon coming to Vladivostok or Khabarovsk, no clear blue sky very often
