First Day Of Summer 2025. Usually, when we talk about the first day of summer, we are referring to the astronomical summer which is defined by the earth's axis and orbit around the sun. Need to know the exact date of of the first day of summer this year?
No world body has designated an official day to start each new season, and different schools of thought or traditions define the seasons in. Usually, when we talk about the first day of summer, we are referring to the astronomical summer which is defined by the earth’s axis and orbit around the sun.