|
The Swedish calendar was a calendar in use in Sweden and its possessions from 1 March 1700 until 30 February 1712 (see below); it was one day ahead of the Julian calendar and ten days behind the Gregorian calendar. Easter was nominally calculated astronomically from 1740 to 1844. ==Solar calendar== In November 1699, Sweden decided that, rather than adopting the Gregorian calendar outright, it would gradually approach it over a 40-year period. The plan was to skip all leap days in the period 1700 to 1740. Every fourth year, the gap between the Swedish calendar and the Gregorian would reduce by one day, until they finally lined up in 1740. In the meantime, this calendar would not only ''not'' be in line with either of the major alternative calendars, but also the differences between them would change every four years. In accordance with the plan, February 29 was omitted in 1700, but due to the Great Northern War no further reductions were made in the following years. In January 1711, King Charles XII declared that Sweden would abandon the calendar, which was not in use by any other nation and had not achieved its objective, in favour of a return to the older Julian calendar. An extra day was added to February in the leap year of 1712, thus giving it a unique 30-day length (February 30). In 1753, one year later than England and its colonies, Sweden introduced the Gregorian calendar, whereby the leap of 11 days was accomplished in one step, with February 17 being followed by March 1.〔Roscoe Lamont, (The reform of the Julian calendar ) (II), ''Popular Astronomy'' 28 (1920) 18–32, see pages 24–25.〕 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「Swedish calendar」の詳細全文を読む スポンサード リンク
|