Moon Phase Table Adjustment Method

As we all know, most of the moon phase tables are adjusted by buttons. Some moon phase tables are not easy to adjust, and the old 59-crankset is easier to adjust.
   The moon phase shows the state of the moon on the moon phase disk according to a period of 29.5 days. This moon phase disk has two moons with 59 teeth on the edge. The moon phase wheel is pushed forward by one tooth every day after being pushed by the transmission wheel. At this time, the changes in the profit and loss of the moon phase can be timely displayed on the dial. The 59-tooth moon phase wheel comes from the moon phase profit and loss every 29.5 days as a cycle average. Since the precise rotation period of the moon is 28 days, 12 hours, 44 minutes, and 2.9 seconds, the error of the moon phase display is about every 33 months. Will reach 24 hours.
   How often is the moon phase table adjusted? How long does the moon phase table run for a week? The moon phase takes about 29.5 days to run a week. Therefore, this type of watch uses 59 gears to display the month age from 0 to 29.5, which will cause a day of error about every 33 months. return.
   When is the specific time for moon phase adjustment? When adjusting the moon phase, you need to check the lunar calendar. It is best to choose the fifteenth lunar calendar. At this time, the moon is in the middle, which has the least impact on accuracy. The moon phase watch has an adjustment button next to the case, which is used to adjust the moon phase indication error. On the fifteenth day of the lunar calendar, adjust the moon phase to the middle of the watch, that is, at the full moon, adjust the picture of the full moon. Go to the middle of the window. Like the calendar and weekly calendar, the moon phase disk also rotates in one direction, and it cannot be adjusted in the reverse direction. Moreover, the moon phase adjustment and calendar adjustment are independent and will not affect each other.
   Compared to the old-fashioned 59-toothed disc, the 135-toothed moonwatch is more troublesome to adjust, but the accuracy of the adjustment is higher. Because the moon phase disk travels very slowly, it can go very accurately after careful adjustment. When adjusting the moon phase disk, try to avoid around 12 midnight, because the watch’s components are changing the calendar at this time, the adjustment is easy to damage the movement at this time, the best adjustment time is about 6 am.
After mastering the method of adjusting the moon phase, it is not difficult to accurately display ‘Yue Qingyue’ on the wrist.
Recommended reading:
The moon phase of Yin Qingyuan’s lack of moon phases


Updated: 8. December 2020 — 0:19
Watches Description