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The ºüÀêÊÓƵ turns 191 on March 15 â€“ and is trending.

Across the university’s three campuses and around the world, students, faculty, staff and alumni are invited to celebrate.

So what’s the best way to honour the university that’s given the world six Nobel laureates, astronauts, life-saving insulin, the first Grey Cup champions, and a based on its iconic library?

±õ³Ù’s 's 191st Birthday! To celebrate, post a photo in your blue & white or spirit gear on campus with to win some great prizes. More details:

— ºüÀêÊÓƵ (@UofT)

There are cookies.

Come celebrate 191st Birthday at Robarts Library with cookies while supplies last.

— U of T Libraries (@uoftlibraries)

Also .

Happy Birthday, ! Celebrating 191 years of academic excellence & innovation.

— UofT Medicine (@uoftmedicine)

You can dress in blue and white.

Happy Birthday !

Wishing you all the very best from your friends at the Faculty of Applied Science and Engineering... but first, let me take a selfie!

— Prof. Chirag Variawa (@ChiragVariawa)

You can look back at some cool photos from the university's history.

Happy 191st birthday U of T, founded this day in 1827.

— U of T Magazine (@uoftmagazine)

So much history! This image from the Image Bank of shows a Sopwith Camel in front of University College 100 years ago.

— U of T Libraries (@uoftlibraries)

And you can test your knowledge of U of T through a quiz posted on the ºüÀêÊÓƵ Magazine’s website.

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How are you celebrating? Tag @UofT and use #HBDUofT on and .