Flags on all City of Ottawa buildings will be lowered to half-mast on Thursday for the National Day of Remembrance and Action on Violence Against Women.
On December 6, 1989 - 14 women were gunned down at L'École Polytechnique in Montreal. They were all engineering students.
The flags in the capital will be lowered from sunrise to sunset.
On Thursday night there will be vigils held to honour those women, and all women affected by violence.
An outdoor vigil will be held at the Women's Monument at Minto Park, at Elgin and Gilmour, starting at 6 p.m.
Then, an indoor vigil will be held at First United and All Saints Westboro Church on Richmond Road at 7:30 p.m.