Summer Solstice 2024 San Diego. The longest day of the year was around 3 months ago, during the summer solstice on june 20, 2024, with a daylight length of 14. The summer solstice presents another opportunity for families to celebrate, bond and add.
June 10, 2024 at 7:37 p.m. The 2024 summer solstice is the earliest since 1796.