What Day Is The Summer Solstice 2025 Calendar. In different time zones, the date of the solstice can differ by a day, so it is important to indicate your exact location. Instead, it’s the moment when the sun is farthest north in our sky.

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. The date varies because the gregorian calendar has 365 days, with an extra leap day added.