When the sun stands still.

HAPPY SUMMERTIME! on this hemisphere!
(and happy wintertime over there....) hugs
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Solstice is derived from the Latin words sol (sun) and sistere (to stand still).

The summer solstice occurs during a hemisphere's summer. This is northern solstice in the northern hemisphere and the southern solstice in the southern hemisphere.
Worldwide, interpretation of the event has varied among cultures, but most recognize the event in some way with holidays, festivals, and rituals around that time with themes of religion or fertility.[5]