The current Flag of Ontario was proclaimed the official flag of the Canadianprovince of Ontario by the Flag Act on May 21, 1965. The flag is a defaced Red Ensign, with the Union Flag in the upper left hand corner and the Ontario shield of arms in the fly. Prior to 1965 Canada as a whole had used both the Canadian Red Ensign and the Union Flag, but in that year the Maple-leaf flag was introduced as the flag of Canada.
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