Summer Solstice 2024 Date Ukm. 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. What time is summer solstice this year?
This june solstice is the earliest in 228 years when it was at 18:45. But there is something a little unusual about the solstice of 2024.
