Summer Solstice 2025 Europe Calendar. This is the first day of astronomical summer and occurs as. This is the first day of astronomical summer and occurs as.

In 2025, the summer solstice in the northern hemisphere will occur on june 20, 2025, at 10:42 pm edt (or 2:42 am utc on june 21). In most education systems, the 2025 summer holidays will start in june.