Perth, the Ancient Capital of Scotland

https://www.electricscotland.com/history/perth/

Fairs: Palm Sun'-E'en, Midsummer, St. John's, Andrewsmas, and the Post Reformation Market, Little Dunning—Establishment of the Post Office, 1689— Proclamation by William and Mary—
Perth, the Ancient Capital of Scotland, The Story of Perth from the Invasion of Agricola to the Passing of the Reform Bill by Samuel Cowan J.P. (1904)

Superstitions from Europe

https://sites.pitt.edu/~dash/superstition.html

and Peacock ) If on midsummer-eve a young woman takes off the shift which she was been wearing, and, having washed it, turns its wrong side out, and hangs it in silence over the b

Groundhog Day, Chinese Astronomy, Halloween, May Day, and other Curiosities

https://friesian.com/grndhog.htm

to Shakespeare's A Midsummer Night's Dream explaining that "Midsummer Night" (or "Eve") actually means 23 June, the night before "Midsummer Day," 24 June. But, one may object, 23/

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