The moon phase watch is a personalized watch with a moon phase display function. Through the moon phase plate on the watch, you can grasp the change of the moon's cloudy and sunny, You can also make the watches with chronograph eyes.

Some watches have a small window on the surface indicating that the moon is missing. This function is called the "moon phase" indication. As we all know, the calendar is also known as the lunar calendar. It is also a method of expressing the time change of nature. It is of great significance in history. Especially in China, there are many people who use the lunar calendar. This kind of watch still has production value in modern times. Swiss Watch Factory chronograph eyes watch are more complicated.

The moon phase meter adds some gears and adjustment devices to a certain gear ratio. A "half-moon" window is opened on the dial. The moon phase plat is usually made of a dark blue background with two sets of symmetrical patterns on it, two round moons with a starry sky in between. In conjunction with the dial window, as the moon phase disk moves slowly, the first quarter month, the full moon, and the lower string month occur in sequence. The most typical moon phase disk teeth are 59, and one tooth will be dialed every day, so that the running cycle of each group of moon phase patterns is 29.5 days, which symbolizes the moon phase cycle.

How to look at the moon phase watch?

The moon phase is calculated as the difference between the sun and the moon (the following degrees are the difference between the sun and the moon). There are eight types:

First quarter month (generally is around from 2th -7th of the lunar calendar): 0 - 90 degrees;
Convex moon (about the 9th - 14th of the lunar calendar): 90 - 180 degrees;
Full moon ( 15th - 16th of the lunar calendar ): 180 degrees;
Second Quarter month (about 16th - 23th lunar calendars): 180 degrees - 270 degrees;
The next month (about 24th - end of the month): 270 degrees - 360 degrees;
In addition, the last day of the lunar month is called the next day, that is, the moon is not seen;

There are four main phases for the moon: the new moon (the first day of the lunar calendar), the winding (about the eighth day of the lunar calendar), the full moon (about 15 days of the lunar calendar), the lower string (about 25th of lunar calendars), they all have clear The moment of occurrence is calculated by precise orbit calculation.

Assuming that the full moon is a circle, then no matter how the moon phase changes, the line connecting its upper and lower vertices must be the diameter of the circle (the moon phase is irregular when the eclipse is). When we see that the outer edge of the moon phase is close to the shape of the C letter, then the moon phase at this time is the moon phase before the 15th day of the lunar calendar. On the contrary, when we see the outer edge of the moon phase is close to the anti-C letter shape. At that time, then the moon phase at this time is the moon phase after the 15th day of the lunar calendar.

How to adjust the moon phase table?

However, the adjustment of the moon phase table is more complicated. It is not like the calendar performance. You can refer to the date number of the day to make corrections. The best way is to adjust the operation instructions according to the manual. However, if there is no manual at hand, the adjustment will be based on the 15th day of the lunar calendar. Based on the full moon, the moon pattern of the moon phase table is aligned with the middle, and then adjusted according to the lunar calendar at that time. For example, if you want to adjust to the second day of the lunar calendar, the end of the lunar calendar last month is 29 days, then adjust the twenty. Nine minus fifteen, plus two can be, but if the lunar calendar has 30 days, then add another one day, which is usually operated by the quick-tuning button located on the side of the moon phase case, or through Adjust by rotating the hoe.

Special reminder: the phase adjustment should avoid the time that is not suitable for the quick adjustment device

How long does the moon phase need to be adjusted?

The most common monthly school display in the watch is the semi-circular window on the dial and the moon phase disc on the movement. The moon phase disc driven by the gear is shielded by different angles of the arc on the fan window, thus showing the moon surround. The state of monthly surplus and monthly loss caused by the operation of the earth. How long does it take to adjust the moon phase meter?

Some watches can't adjust the calendar and the moon phase in a certain period of time, so please pay attention to avoid this time period during the operation. When adjusting the moon phase, we check the lunar calendar, preferably on the 15th lunar calendar. At this time, the moon is in the middle, which has the least impact on accuracy. You can also adjust it by referring to the phase change chart.

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