Summer Solstice 2024 Uk Calendar. It is the longest day of the year that marks the arrival of the. Thursday, june 20 is the official first day of northern astronomical summer for 2024 — summer solstice — which is the longest day of the year for this half of the planet.

The summer solstice in the uk was traditionally marked with bonfires, which were used to honor the sun’s warmth and light, and to ward off evil spirits. Here’s everything you need to know about the northern hemisphere’s.