The 2026 summer solstice falls in days – here’s everything you need to know about the longest day of the year

The 2026 summer solstice, happening on June 21, will mark the longest day of the year and the official start of astronomical summer, ending on the autumn equinox on September 23. The solstice signifies the sun reaching its highest point in the sky, leading to more daylight hours compared to any other day. This event is significant as it influences seasonal changes and has been observed for centuries in various cultures, often celebrated with festivities and rituals. Understanding the solstice helps us appreciate the Earth’s orbit and seasonal cycles.