2025 Summer Calendar. Graded coursework (including but not limited to tests, exams, quizzes) is not permitted during concentrated study period. Download the monthly calendar for the summer of 2025.

Summer 2025 starts on friday, june 20th in the northern hemisphere, with the first day of summer being the longest daylight day of the year with the earth’s axis. The 2025 north american race season is full of exciting events and destinations for your next exhilarating race experience.