Редкое огромное облако формируется в Австралии каждый день с сентября по март каждый год.
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A rare huge cloud is formed in Australia every day from September to March every year. The Oberko, named Hector, forms at noon almost every day on the islands of Tiwi in the Northern Territory in Australia. Usually it occurs annually from September to March and reaches a height of about 20 km. Meteorologists around the world are trying to learn the cloud and find an explanation for its appearance.