Understanding and setting your watch Sully Moon Phase

If you have just acquired a Sully Moon Phase or if you want to better understand how it works, don't worry: Team Charlie Paris has prepared a complete guide to help you learn how to set the moon, date and time on your watch.

This elegant watch, featuring a rare and poetic complication, perfectly embodies French watchmaking expertise.

What is a watch? Moon Phase ?

There Moon Phase is one of the most fascinating complications in watchmaking. It indicates on the dial the different phases of the lunar cycle: new moon, first quarter, full moon and last quarter.

On the Sully Moon PhaseThis function is represented in the lower part of the dial, giving your watch a technical, poetic and refined dimension.

Adjusting your Sully Moon Phase

Before any adjustments are made, it is important to follow the order of adjustment below:

• First the moon, then the date, and finally the time.
  

This method ensures the proper functioning of the mechanism and preserves the accuracy of your watch.

Moon Setting

• Pull the crown out to position 2.
  
• Turn the crown as if setting the time. The moon will advance one position every 24 hours (there is no quick correction).
  
• Press the crown to return it to position 0 once the correct lunar phase has been obtained.

A concrete example of how to adjust the Moon:

To properly set the moon, you need to know the current lunar phase. Let's say it's October 14, 2025; check the current lunar phase for that day (for example, on the lunar calendar above or an app). If it is October 14, 2025 and the last Full Moon was 7 days ago (October 7), you must advance 7 days from the Full Moon you just positioned.

Based on your Full Moon reference:

Pull the crown out to position 2, then turn the crown to advance the hands. Each time you pass midnight (or 24 hours), the Moon Phase one day ahead.

If you need to advance 7 days to reach the October 14th phase, you will need to rotate the crown the equivalent of 7 full days. Once the Moon Phase corresponds to that of October 14th, stop turning and return the crown to position 0.

This method ensures proper synchronization between the time and the lunar complication. You will then proceed to set the date.

Date setting

Never change the date when the hour hand is between 9:30 p.m. and 1 a.m., as the automatic date-changing mechanism is then engaged.

• Pull the crown out to position 1.
  
• Turn the crown until the correct date is displayed.
  
• Return the crown to position 0 to finalize the adjustment.
  

Time setting

• Pull the crown out to position 2.
  
• Turn it to set the desired time, respecting the 24-hour time cycle for a smooth date change.
  
• Press the crown to return it to the 0 position and make sure it is properly engaged; this ensures the water resistance of your watch.
  

Care and usage instructions

To preserve the beauty and precision of your Sully Moon PhaseHere are some good practices to adopt on a daily basis:

• Do not adjust your watch while it is on your wrist to avoid bending the crown stem.
  
• Avoid shocks and strong temperature variations, which may impair the movement or the seal.
  

There Sully Moon Phase is much more than just a watch: it is a tribute to time and the beauty of the night sky.

Thanks to this guide, you now know how to accurately set the moon, date and time on your watch, while respecting best practices to preserve its mechanism.

And to help you visually, here is an excerpt from user manual illustrating the different positions of the crown and the display of the phases of the Moon.