Matthew R. Pressley

First Day Of Summer 2025 Uk Time. When the clocks move forward by an hour, it is known as british summer time or daylight saving time. This year’s summer solstice falls on june 20, 2025.

The summer solstice is the first day of astronomical summer, although the more logical metrological summer begins december 1st / june 1st (depending on hemisphere). Here’s what to know about the summer solstice in the northern hemisphere on thursday.