End Of Summer 2024. The first day of summer (june solstice) is when the sun is in its most northern position directly over the tropic of cancer. Find out the date, how long in days until and count down to since summer 2024 with a countdown clock.
The first day of summer (june solstice) is when the sun is in its most northern position directly over the tropic of cancer. Photo by alex grimm/getty images.