June Solstice: first day of Summer

In 2021, the June solstice occurs on Sunday, June 20, marking the start of summer. At least, in the Northern Hemisphere. But the solstice happens at the same instant for all of us, everywhere on Earth. Only our clocks are different. But really is the summer solstice the first day of summer? Yes and no. Basically, it depends on whether we’re speaking about the meteorological or astronomical start of the season. Most meteorologists divide the year into four seasons based on the months and the temperature cycle, which allows them…

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