The national flag of Botswana was adopted on September 30, 1966. The flag is light blue with a black horizontal band across the centre, with a white border. The stripes are in a ratio of 9:1:4:1:9. The blue colour stands for water, specifically rain, and comes from the motto on the Botswanan coat of arms, which states Pula, the Tswanan word for "Let there be rain". The white and black bands stand for racial harmony, and also refer to the zebras that support the nation's coat of arms.
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