Solstice 2024 Summer History. June 20, 2024, marks the summer solstice — the beginning of astronomical summer — in the northern hemisphere. Edt (2051 gmt), and the summer solstice for the southern hemisphere occurs on dec.
In 2025, the solstice moment will fall at 2:42 utc on june 21 (9:42 p.m. The 2024 summer solstice will be the earliest for 228 years.