Task 1. When it is 18:00 in Skopje, it is 16:00 in Moscow. An airplane flying on the Moscow-Skopje route landed in Skopje at noon. If the flight lasted 2 hours and 40 minutes, at what time did the plane take off from Moscow (according to Moscow time)?
Solution. The airplane flew to Skopje at noon, and since the flight lasted 2 hours and 40 minutes, it took off from Moscow at 9:20 AM Skopje time. Since the time zones differ by 2 hours, it was 7:20 AM Moscow time.