Second, if there is only a calendar, you can directly pull the crown to the position where the calendar is adjusted (generally only one paragraph is pulled out) and adjust the calendar to the day before today. For example, today is the 5th, so change it to the 4th. Then skip to step 4. If it is a full-day calendar, there are generally two adjustment spaces on the side of the watch: it needs to be adjusted with a small needle (usually when buying a watch). Hold the needle firmly to avoid scratching the case. For full calendar watches, first adjust the calendar to 1, then adjust the month to this month, then adjust the date to yesterday, and adjust the week to this week.
Third, then you need to find out which day is the full moon day of the previous month (the full moon day is calculated according to the lunar calendar, and the date of the watch is the solar calendar, and the calendar table is often used) and work out today's day. For example, today is July 15, the last full moon was July 2, and today is June 13. Press the adjustment key on the outside of the case (all watches with moon phase function have embedded adjustment keys, and different brands have different positions), press the moon phase for one day until the moon is in the middle of the moon phase disk, and then press this adjustment key 12. (Note here, why not 13 days? Please refer to the next step. )
Fourth, now you can adjust the time to the right time. The way is to go forward until the calendar has passed a grid to today, and then let the time go forward to the right time. If it is three o'clock in the afternoon, you need to go through twelve o'clock and continue to say three o'clock. In this process, the moon phase also moves forward one day to the correct number of days.