Summer Solstice 2025 Date And. Thursday, june 20 is the official first day of northern astronomical summer for 2025 — summer solstice — which is the longest day of the year for this half of the. Ct on june 20, according to timeanddate.com.
Here are the equinox and solstice dates—plus, answers to common questions. 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.
