In Quebec City Monday night, thousands of people packed the historic Plains of Abraham to mark Quebec‘s official holiday.
Quebec City police say there were some arrests for minor offences but reported no significant incidents.
Today in Montreal, an annual parade will wind through downtown to Maisonneuve Park in the east end for a concert in the evening.
In all, some 1,100 shows are due to be held across Quebec.
Prime Minister Stephen Harper is scheduled to deliver a speech marking the holiday in Saint-Lazare-de-Bellechasse, outside Quebec City.
In a statement, Harper said today's festivities "allow us to appreciate how Quebecois and Francophone heritage have contributed to building a united and prosperous Canada."
NDP Leader Tom Mulcair and Liberal Leader Justin Trudeau also issued statements marking the holiday.