What Day Is The Summer Solstice 2026. There are then 158 days left in 2026. On the day of the autumn (september) equinox, the sun, moving along the ecliptic, crosses the celestial.
This is the first day of summer (summer solstice) in the northern hemisphere and the first day of winter (winter solstice) in the southern hemisphere. This year the summer will start on thursday june 20, 2024 (day of the summer solstice) and will end on sunday september 22, 2024 with the autumnal equinox.