When Is Summer Equinox 2024. Summer begins with the solstice on thursday, june 20, 2024, marking the astronomical first day of summer in the northern hemisphere. Summer solstice 2024 (beginning of astronomical summer) on the day of the summer (june) solstice, the solar disk, moving along the ecliptic, will fall into its northernmost.
What will that mean and why is this year’s so early? The equinoxes occur around march 20 and september 22 each year, corresponding to an equal length of day and.