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Leap year starting on Sunday : ウィキペディア英語版 | Leap year starting on Sunday This is the calendar for any leap year starting on Sunday, January 1 (dominical letter AG), such as 1956, 1984, 2012, 2040, or 2068.〔 "A leap year beginning on Sunday", jonstlouis.htmlplanet.com, 2011, webpage: (HTMcal ). 〕 This is the only leap year with three occurrences of Friday the 13th (common years starting on Thursdays share this characteristic). Each instance of Friday the 13th is three months apart in January, April, and July. Uniquely, these instances are also 13 weeks apart from one another. ==References== 〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Leap year starting on Sunday」の詳細全文を読む
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