Osuit Summer 2025 Calendar. 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 having reached. Summer semester 2024 (12 week format) date
All campuses will be closed monday, may 26, 2025 for memorial day. Any calendar is subject to change when it is determined to be in the best interest of the university to do so.
