June 20

June 20 is the 171st day of the year (172nd in leap years) in the Gregorian calendar. There are 194 days remaining until the end of the year. This date is slightly more likely to fall on a Monday, Wednesday or Saturday (58 in 400 years each) than on Thursday or Friday (57), and slightly less likely to occur on a Tuesday or Sunday (56).

In the Northern Hemisphere, the Summer solstice sometimes occurs on this date, while the Winter solstice occurs in the Southern Hemisphere.

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Wikipedia