What Is Summer Solstice 2024 Uk. Solstices and equinoxes mark the key stages in the astronomical cycle of the earth and,. It is also the point in the calendar where the day length is more or less equal to the length of the night.

The longest day of the year for 2024 will occur on thursday 20th june, marking the summer solstice and the start of the astronomical summer. The summer solstice is the longest day of the year, meaning the day of the year that has the most hours of sunlight.