For those of us who don't know, December 6 is a super important date in Canada.
It's the National Day of Remembrance and Action on Violence Against Women.
It goes down each year on December 6, and the main reason why this date was chosen is because of what happened in Montreal 27 years ago.
On December 6, 1989, an incredibly tragic event took place at Montreal's Polytechnique, where a 25-year-old murdered 14 women and injured another 10.
In order to commemorate the 14 people who were killed, many events go on in the city in their memory.
Every single year since 2014, there's been one particularly special ceremony taking place in Montreal, where 14 beams of light are projected into the sky from Mount Royal in memory of the 14 victims.
Last year, the event took place at 5:00 PM, and Prime Minister Justin Trudeau was in attendance. No specific details so far on what's going down this year, though.