What Day Is The Longest Day Of The Year 2024. Edt on june 20, according to timeanddate.com. June 21 is the day of summer solstice in 2024, marking the longest day in the year.
The first day of what’s projected to be an unusually hot summer, the longest day of the year and the summer solstice all arrive thursday, june 20. The longest day in united kingdom is 24 hours long i.e.