- Summer | Sunshine, Heatwaves, Vacations | Britannica
Summer, warmest season of the year, between spring and autumn In the Northern Hemisphere, it is usually defined as the period between the summer solstice (year’s longest day), June 21 or 22, and the autumnal equinox (day and night equal in length), September 22 or 23; and in the Southern
- When Do the Seasons Start and End in 2025? | Spring Equinox, Summer . . .
When do the four seasons start in 2025—for spring, summer, fall, and winter? Here are the equinox and solstice dates—plus, answers to common questions about the seasons of the year in North America
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