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Al Jazeera
Al Jazeera
Technology
Hanna Duggal, Marium Ali

What is the summer solstice, and why is June 21 the longest day?

(Al Jazeera)

The summer solstice is an astronomical event that marks the longest day of the year and the start of summer in the Northern Hemisphere.

It nearly always falls on June 21, but can also fall on June 20 or June 22 depending on the year and time zone you are in.

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