March 14 is the official day for Pi Day derived from the common three-digit approximation for the number Pi, 3.14. It is usually celebrated at 1:59 pm (3.14159). Parties have been held by mathematics departments of various schools around the world. This is not to be confused with Pi Approximation Day[?] on July 22.
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DB is the abbreviation for Deutsche Bahn, the major German railway company
DB is the abbreviation of Dominion Breweries[?], a major beer brewing ...