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LiveScience
LiveScience
Ben Turner

The 2024 summer solstice will be the earliest for 228 years. Here's why.

Photo of Stonehenge as the sun is peeking between the stone arches.

Today (June 20) the summer solstice — the longest day of the year in the Northern Hemisphere — will begin, and it will be the earliest solstice in 228 years.

And the solstice is set to get progressively earlier for the next 72 years. But why? And why do the days change in length throughout the year to begin with?

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