When Is 1st Day Of Summer 2025. 5 months and 24 days). Summer solstice 2025 (beginning of astronomical summer) on the day of the summer (june) solstice, the solar disk, moving along the ecliptic, will fall into its northernmost point and will be.
The summer solstice is the day with the most hours of sunlight during the whole year. 5 months and 24 days).
