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In page United Kingdom:

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The average total annual sunshine in the United Kingdom was 1,339.7 hours between 1971 and 2000,[6] which is just under 30% of the maximum possible.[citation needed] The hours of sunshine vary from 1,200 to about 1,580 hours per year, and since 1996 the UK has been receiving above the 1,981 to 2,010 average hours of sunshine.[7]