Fernando Magellan

Its cover date, week, month, year and four-digit calendar month with the calendar display is also function of complex combination of the best watches. Watch the display of the complete autonomy to promote, through the mechanical process to achieve simultaneous operation of the display. The only exception was in February 2100 to correct the need for a leap day, and this operation does not interrupt the operation of watch, but not necessary under the guise of the wearer hands. They just normal wear watches, automatic movement is equipped with high efficiency Biller Dayton pawl ceremony chain kinetic energy will be required for injection. Because of the complicated foreign calendar (Gregorian calendar) always try to ensure that the length of each constant, so the end of 2100, 2 there will be no leap day should therefore be adjusted to their needs watchmaker. So, we had better remember to remind their children and grandchildren or great-grandchildren pay attention to this situation. In addition, in the distant 2100, at the end of narrow band transmission chain of the century shows vane will automatically move forward a few millimeters, now appears in the display window of the number;20" will be 21 replaced in order to complete Show the next one hundred years of the year.

IWC Watches

Portuguese Perpetual Calendar watch is equipped on the moon phase of the astronomical display, its accuracy is comparable with scientific instruments: only in these watches, because of large case provides ample interior space, the phases of gear to improved, so that the display of moon phase cycle unparalleled accuracy. Each lunar revolution period (29 days 12 hours 44 minutes 3 seconds) will only have 12 seconds remaining small error will accumulate every day on 577.5 error. In other words: According to the current level of knowledge of mankind, and only the moon will be more accurate than it is – the gap which is only minimal.