June 21 is the 172nd day of the year (173rd in leap years) in the Gregorian calendar; 193 days remain until the end of the year. It is the most common day on which the June solstice occurs, in the astronomical reckoning the first day of summer in the Northern Hemisphere and of winter in the Southern Hemisphere.
June 21 is the 172nd day of the year (173rd in leap years) in the Gregorian calendar; 193 days remain until the end of the year. It is the most common day on which the June solstice occurs, in the astronomical reckoning the first day of summer in the Northern Hemisphere and of winter in the Southern Hemisphere.
Source: Wikipedia "June 21" · CC BY-SA 4.0
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