Japanese customers believe in "shosho", the day when summer heat begins to drop on August 23rd each year

"According to traditional belief, Aug. 23 is "shosho," the day when summer's heat begins to wane, but conditions across the nation were still scorching on Monday."


Source: Heat defies tradition, rewrites record books
The Yomiuri Shimbun
Aug. 24, 2010
http://www.yomiuri.co.jp/dy/national/T100823003147.htm