Red Star 1963 Moon Phase Pilot Chronograph Sapphire Calendar
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Lunar Phase Function Description
- The lunar phase function is similar to the design of the Chinese lunar calendar.
- The lunar phase advances by one step each day. Every time the hour hand completes two full rotations, the lunar phase moves forward by one step.
- On the 15th day of each lunar month, the moon is at its central position. The lunar phase disc rotates 180 degrees, and the complete cycle lasts approximately 29.5 days.
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