Canada is celebrating 150 years of what, exactly?

Canada 150. Canada's birthday. The sesquicentennial. There must be 150 ways to name 2017, but what are we talking about exactly? Well, that depends on how you look at it.

You don't look a day past 149

The year 2017 marks 150 years since Confederation. Or rather, what we've come to call Confederation.

Canada is actually a federation, but the term Confederation caught on in the in the 19th century and itstuck we've named squares and bridges after it, we refer to the "Fathers of Confederation" (and the Mothers too!), and the word has come to represent the country and the events that created it.

"It" being "one Dominion under the crown," a.k.a. the Dominion of Canada, as per the British North America Act of 1867that unified the colonies (Province of Canada, Nova Scotia and New Brunswick).

Union wasn't a new concept the idea was first presented in early 1800s, and the Act of Union in 1840 saw Upper and Lower Canada (English- and French-speaking Canada respectively, more or less)tie the knot to form the Province of Canada.

On July 1, 1867, it was just four provinces (Ontario, Quebec, Nova Scotia and New Brunswick) that composed the new Dominion of Canada. The rest of the provinces and territories joined and were formed over time, Nunavut being the most recent, which officially separated from Northwest Territories in 1999. So you could say that Canada as we know it ten provinces and three territories is turning 18.

Your ID says 35

In 1982, Canada "patriated" the constitution, a political process that led toCanadian sovereignty, allowing Canadians to amend our Constitution without requiring Britain's approval. This, the Constitution Act of 1982, was a landmark event and enacted our Canadian Charter of Rights and Freedoms. Yes, this declaration of independence took place in the '80s, and it was in 1982 that "Dominion Day," aka July 1, was renamed in Parliament to "Canada Day."

Oh Canada, you millennial, you.

(And if we're being technical, the Constitution Act itself cleaned upa bit of unfinished business from the Statute of Westminster in 1931, in which Britain granted each ofthe Dominions full legal autonomy if they chose to accept it. All but one Dominion that would be us, Canada chose to accept every resolution. Our leaders couldn't decide on how to amend the Constitution, so that power stayed with Britain until 1982.)

Our home on Native land?

For many Indigenous people (and non-Indig people, too), Canada exists on stolen land. While multiple First Nations have treaty agreements with Canada, others do not; there are unceded territories, andbroken treatiestoo.

The Royal Proclamation of 1763, enshrined in our current Constitution Act, says that any land not given up by treaty belongs to First Nations, which some arguewould makethe occupation of most of B.C. illegal in our own laws a position not shared by the Province of British Columbia, it should be noted.

Sesquicen... what?

Sesquicentennial. Sesquicentennial. It means a one-hundred-and-fiftieth anniversary, and if you perfect the pronunciation it's a real crowd pleaser.

You're not the only one

The coming year isn't being touted as a big anniversary forjustCanada: Montreal is marking 375 years since Fort Ville-Marie was founded in 1642, and in sports, the National Hockey League is celebrating its centennial year and the Ottawa Senators their 25th.

A year by any other name

Call it Canada 150or simply 2017, thisyear is an occasion to reflect back and look forward; 2017 marks 150 years since a turning point in history, but the future is ever open.

Could 2017 mark a watershed, too? In the age of Truth and Reconciliation, climate change and our American neighbour's political shakeupwhat do we want to be when we grow up? What will thecountry at its tricentennial if we're still giving a nod to Confederation in 2167 look back at and remember of this year?

It's your birthday, Canada, make a wish. Make it count.