Confederation was accomplished when the Queen gave royal assent to the "British North America Act" (BNA Act) on March 29, 1867, followed by a royal proclamation stating: "We do ordain, declare, and command that on and after the First day of July, One Thousand Eight Hundred and Sixty-seven, the Provinces of Canada, Nova Scotia, and New Brunswick, shall form and be One Dominion, under the name of Canada." That act, which united the Province of Canada with the colonies of New Brunswick and Nova Scotia, came into effect on July 1 that year. The act replaced the Act of Union 1840 which had unified Upper Canada and Lower Canada into the united Province of Canada. Separate provinces were re-established under their current names of Ontario and Quebec. July 1 is now celebrated as a public holiday, Canada Day, the country's official National Day.