Solstice 2024 Summer. The summer solstice marks the longest day of the year and the start of astronomical summer. Edt, when the sun reaches its northernmost point in the sky.
Learn why the summer solstice in the northern hemisphere will be the earliest on june 20, 2024, and how this is related to the gregorian calendar and earth’s tilt. The sun will not set at the north pole, and at the south pole, it will not rise.