Celestial Sunrise and Sunset

The crown at 2 o’clock, adorned with a sky motif, is known as a bayonet-release crown.
To prevent inadvertent adjustment, engage the adjustment functions by pressing the crown firmly toward the case while turning it counterclockwise to activate the setting mechanisms.

Once the crown is engaged, turn it counterclockwise to adjust the annual index, which interacts directly with the sunrise and sunset hands.

To set the year indication, consult the date, time, and nearest city on the dedicated page for your timepiece at Patek.com.

This page provides three precise adjustment indications for the sunrise / sunset display, Moon phase, and sky chart positions.

When entering the current time on the website, add a few extra minutes (e.g. five) to allow sufficient time for the settings to appear.

Position the sunrise / sunset triangle at 12 o’clock by turning the crown counterclockwise. The red triangle is located on the inner edge of the date disc.
Once at 12 o’clock, advance it by the number of large segments (thick red and black graduations) indicated on the website, then by the number of small segments (fine black graduations) likewise specified.
The sunrise and sunset hands will now align precisely on the time reading scale.

Note that, during counterclockwise rotation, a characteristic click signals proper engagement with the sunrise / sunset mechanism.
When turning the crown clockwise it rotates freely and silently as it is disengaged from the mechanism.

Still using the 2 o’clock crown, pull the crown out one notch; turning clockwise here, the mechanism also rotates silently. Rotate the white triangle on the Moon phase disc. Turn the crown clockwise until full Moon, with the triangle on the disc positioned at 12 o’clock.

To set the Moon phase, enter the city and date found on the Patek.com web page. Perform the specified number of full rotations of the dial to position full moon at 12 o’clock, then advance the Moon disc by the number of large segments (thick red and black graduations) indicated on the website, followed by the number of small segments (fine black graduations) likewise specified.

Still with the 2 o’clock crown pulled out one notch, turn it counterclockwise (the mechanism rotates silently) and rotate the white triangle on the star disc to the 12 o’clock position. Then advance it by the number of large segments (thick red and black graduations) indicated on the website, followed by the number of small segments (fine black graduations) likewise specified.