What Is The Longest Day Of The Year 2024. Summer solstice has been seen as a significant time of the year in many cultures and has been marked by festivals and rituals across. This event is known as summer solstice or june solstice.
Summer officially begins in the northern hemisphere today (june 20), marking the longest day of the year. Edt (2051 gmt), and the summer solstice for the southern hemisphere occurs on dec.