It is Canada Day today! Every year the country celebrates the national day of Canada which is the anniversary of July 1, 1867. On this day, the Constitution Act, 1867 (then called the British North America Act, 1867) united the three separate colonies of the Province of Canada, Nova Scotia, and New Brunswick into a single Dominion within the British Empire called Canada. The day is celebrated with amazing firework and gatherings. People wish each other on this day and every Canadian share greetings with each other.