1. Generally, Canadian universities start classes in 10, May and September. September is a big class, and all majors in all universities have to start classes. 1 is a small class. Some majors will start classes at this time, but few will start classes in May, which are aimed at international students who want to make up classes or enroll early.

2. The "winter vacation" of Canadian universities is very short, usually from mid-February to1early October, which is mainly Christmas and New Year holidays.

The summer vacation in Canadian universities is very long. For undergraduates, it is generally 5 months, 6 months, 7 months and 8 months. Students can choose to take a vacation to work, or they can choose to take more courses in the summer vacation and strive to graduate early.