First Day Of Summer 2025 Calendar Date. All undergraduate programs, and most graduate programs, follow the semester calendar. Approved semester calendars include the traditional.

Meteorological spring starts march 1st in the northern hemisphere and lasts 3 months (march, april, and may) with summer season (june, july, and august) and. Known in icelandic as ‘sumardagurinn fyrsti’, the first thursday after april 18th is an icelandic public holiday.