Time Of Summer Solstice 2024. What exactly is the summer solstice? The time of the annual summer solstice will be the earliest it's been for centuries and will continue to creep forward every leap year until 2100.
The solstice always occurs between 20 and 22 june, and during a leap year (such as 2024) it always falls on 20 june. Thursday, june 20 is the official first day of northern astronomical summer for 2024 โ summer solstice โ which is the longest day of the year for this half of the planet.