Perpetual calendar function is very complex, maintenance is quite troublesome self-torture, maybe you can not wait for 100 or 400 years in this life.
Those near the eternal watch
Perpetual calendar is not a mere benefit, on the contrary I think this is a very emotional one. Imagine in the face of such a complicated calendar of mankind, master watchmaking is with a feeling of passion, poor people, only to make all the changes in this function to achieve all. And as the owner of calendar watch, think of these, it will certainly not difficult to experience the "deceased, such as Si, forget the day and night," the mood it.
Perpetual calendar watches, in the most eternal gesture to appear in front of people, with the shortest moment of interpretation of the concept of existence. Although no one can figure out how far forever, but still in the direction of time to find. Because, people always believe that timeless timepieces are actually on the road of dreams.
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mission Impossible
If the existing calendar is not so complicated, there is no leap year, or there will be at least one leap year every 100 years, it is not difficult to achieve a "perpetual calendar," or "eternal calendar." The problem is that not only will we have a leap year in every four years, we must have a leap year less every 100 years, and another leap year every 400 years. By the year 3300, we have fewer leap years. More troubling rules will happen in your next life, next life, next life ... ... every 1000 years, will be an extra day, every 10,000 years will be more than 2 days, 10 million years will be more than 4 days, 100 In a thousand years, there will be another day, and this error is endless.
The reason for making such a rule is that our timing is inaccurate. We know that the exact time of the Earth revolution for a week is 365 days, 5 hours, 48 minutes and 46 seconds, which is 5 hours, 48 minutes and 46 seconds longer than our 365 days a year. This error accumulated 4 years, it will be an extra 0.9687588 days, so after 4 years, we need to increase one day to make up for this error. But such errors are not accurate enough. Because the extra 1 day of leap year is only an approximation, 0.031241 days are actually added, about 3/100 days more every 4 years, and 3 days more if we add up in 400 years. Therefore, 2100, 2200, 2300 can not be a leap year.
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Why realize the "calendar" so difficult?
For electronic watches, the realization of the calendar is a breeze, watchmakers can easily write the calendar into a program, and then enter the watch chip. Every special year, the program will automatically trigger the timer to be amended. However, for mechanical watches, there is no compiler to store the calendar, the watch master can only choose to use sophisticated gears to "remember" the special year of 100 years. The movement has a complex set of gear mechanism, it can automatically adjust large and small month's calendar. This four-year rotation of the micro-gear a week, to ensure that even if the watch leap year in February can also be automatically adjusted - from February 29 to March 1. However, since every one hundred years, there will be an error of one day, which limits the gear that rotates every four years and will normally operate for 100 years at most. Therefore, the vast majority of calendar watches, can only be run until 2100. That year, we need to go to the watch shop to be adjusted.
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Before the calendar
The earliest and easiest watch calendar structure, called "Simple Calendar" (Quantieme Simple). This watch needs to be adjusted five times a year in February, April, June, September and November. This adjustment is not only cumbersome and lacking in elegance, but it can also be inadvertently embarrassed by business or personal occasions. More complex than the simple calendar is the "calendar" (Quantieme Annuel), its appearance, brought a lot of convenience for people. Calendar to know the length of the month and the month, only in each leap year on February 29 adjusted just fine.
Who invented the calendar
According to the literature, the French philosopher Diderot, in his encyclopedia compiled in 1765, referred to a calendars made by the Swiss watchmaker Ferdinand Berthoud called "Everlasting". Later, another 18th-century master watchmaker, Jean Antoine Lepine, once recorded that a master named Lepine had dedicated Louis Vuitton's large, complex pocket watch, a collection of three questions, time equations and calendar functions. It is speculated that Breguet invented the Tourbillon is likely to worship Lepine as a division for some time. This may also be the reason that he invented the world's first calendar pocket watch.
Perpetual calendar movement design is not complicated, including the unique star wheel structure, the lunar month structure and the Maltese cross-shaped leap year counter and so on. These structures were well known as early as the 19th century. However, the first perpetual calendar watch was made by Patek Philippe in 1925 and was sold to Thomas Emery in 1927. It just used a pocket watch movement that was made as early as 1898. This number 97975 movement not only shows the date, day of the week, month, but also shows the function of moon phase profit and loss. All the pointers on this watch have instantaneous jump bodies, even today it is staggering.
Ten years later, in 1941, when the world was still in full swing, Patek Philippe introduced the world's first mass-produced perpetual calendar watch PP1526.
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How to maintain calendar watch?
Since the perpetual calendar mechanical institutions have their own permutations and combinations, the adjustment after stoppage is quite complicated. Traditional calendar adjustment, is to rely on a variety of tuning buttons to complete the operation, these buttons are located on the side of the case, the need for the use of specialized tools. Now there are some watches for the convenience and practicality for the purpose, using the easiest way to adjust, as long as the crown out, adjust the calendar in different stalls, weeks and other parameters can be. If you are afraid of trouble, you can send it to the watch shop to be adjusted. However, people who really love the table, it will not stop the perpetual calendar table, long-term wear, it will put it in the box.
Calendar watch topic : We all know 365 days a year can be divided into large, Satsuki, leap year every four years there, which are common sense we routine knowledge. When you encounter a watch, its date shows that they can be big, Satsuki. Even a leap year leap year can be automatically resolved, you will be surprised for this amazing display? It is a calendar watch ... [into the topic]
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