Canada Day is celebrated on July 1, it marks the moment in history that Canada became an independent nation. It is a public statutory holiday observed by all provincial governments. When July 1 is a Sunday, Canada Day is celebrated on the following day, Monday the 2nd. Most businesses are closed for the day and many people will choose to celebrate with family and friends at parties, firework displays or picnics.

https://www.canada.ca/en/canadian-heritage/campaigns/canada-day.html