2025 Summer Calendar Date Range Map. 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. First day of classes for term running from july 2 to august 8 (exams.
Friday, 20th june 2025, 7:43pm. Summer solstice 2025 (beginning of astronomical summer) on the day of the summer (june) solstice, the solar disk, moving along the ecliptic, will fall into its northernmost.