Yellow calendar and chronology of Huangdi

Perpetual calendar 199 1 Gregorian calendar April 2022 13 Gregorian calendar is a calendar which was produced on the basis of the China lunar calendar and handed down by Emperor Xuanyuan, and has many characters to indicate the good or bad luck of the day. At that time, it was hard to imagine what it would be like to talk about a perpetual calendar if you had a perpetual calendar that could automatically identify and display all kinds of information from year to day to week.

The principle of perpetual calendar is very complicated. The function of perpetual calendar is closely related to the breadth of computing time. It is not only a universal time display, but also a relatively complete time display mechanism that can identify leap year months. It's more complicated. As mentioned above, such a complex algorithm must rely on some gears with different sizes for operation and calculation. In a small case, we can imagine its engineering difficulty. The rare and complicated operation principle and mechanism determine that the number of perpetual calendar watches is scarce. According to "Rare Things are Precious", Patek Philippe's perpetual calendar chronograph is undoubtedly one of them. Even in the 75th anniversary of/kloc-0, its complex functions are still out of date.

The movement of a perpetual calendar watch can be divided into two parts, one is responsible for the work of every minute, and the other is like a set of astronomical self-propelled devices, using micro-satellite gears. Can a perpetual calendar watch really be used for ten thousand years without adjusting the watch? Reveal the perpetual calendar, one of the three watchmaking techniques! A perpetual calendar watch does not mean that it can really run for 10 thousand years, and there is no error at all.

Mechanical watches with perpetual calendar function need not be adjusted for at least 100 years if the watch keeps normal operation. Of course, the average table owner can't live so long, which is the longest in history. We all know that perpetual calendar is one of the three complex functions of mechanical watches. Compared with the well-known flywheel, the perpetual calendar is not so brilliant, but it is complex and practical.

Here is the 199 1 calendar query table, which provides a complete 199 1 calendar comparison query table, including 199 1 lunar calendar query, 19 1. 199 1 calendar, 199 1 agricultural calendar, 199 1 lunar festival comparison table 199 1 MCMXCI, which belongs to China.

199 1 lunar calendar comparison table, 199 1 lunar calendar query table, 199 1 Gregorian calendar query table, 199 1 calendar query table,/kloc Explain that green represents 24 boxing days, red in the solar calendar represents weekends, and other colors are festivals. This table is the calendar of 199 1 year, including calendar festivals such as 24 solar terms. For your reference.

199 1 calendar chronology, 199 1 calendar year with lunar calendar, 199 1 calendar year with lunar calendar. 199 1 1 February is a special month, and many people's lunar calendar falls on 199 1 12. The following is the details of the perpetual calendar 1 I brought. Is it important to choose a date? Choosing a day is also called choosing an auspicious day.

199 1 calendar with lunar calendar, 199 1 lunar calendar, 199 1 lunar calendar, 199 1 solar calendar and lunar calendar comparison table,/

Calendar 199 1 calendar provides 199 1 calendar 199 1 calendar, with a total of 365 days in a year 12 months, with solar terms and festivals marked/kloc-every month.

The above is about the perpetual calendar 199 1 solar calendar, and the sharing of perpetual calendars. I saw 199 1 calendar lunar calendar. I hope this will help everyone!