Svend Andersen Geneva considered as the most inventive watchmaker in Geneva. Our calendar, the so-called Gregorian calendar, was introduced in 1582 by Pope Gregory XII. It provides three days to be left out within fou...Svend Andersen Geneva considered as the most inventive watchmaker in Geneva. Our calendar, the so-called Gregorian calendar, was introduced in 1582 by Pope Gregory XII. It provides three days to be left out within four centuries. Thus, the secular years which cannot be divided into 400 do not have the 29th February. Therefore 1700, 1800, 1900, 2100, 2200, 2300 are no leap-years. Wristwatches with perpetual calendar usually have to be regulated manually, not so, however, the "Secular-Perpetuel-Calender" Wristwatch, for it has a real perpetual calendar.展开更多
文摘Svend Andersen Geneva considered as the most inventive watchmaker in Geneva. Our calendar, the so-called Gregorian calendar, was introduced in 1582 by Pope Gregory XII. It provides three days to be left out within four centuries. Thus, the secular years which cannot be divided into 400 do not have the 29th February. Therefore 1700, 1800, 1900, 2100, 2200, 2300 are no leap-years. Wristwatches with perpetual calendar usually have to be regulated manually, not so, however, the "Secular-Perpetuel-Calender" Wristwatch, for it has a real perpetual calendar.
