Patek Philippe has given its Celestial line a bold new chapter with the Ref. 6105G-001 Celestial Sunrise and Sunset, a white-gold astronomical watch that pairs traditional sky-chart mechanics with a far more contemporary case and strap execution.
Introduced at Watches and Wonders 2026, the model succeeds the discontinued Ref. 6102 and adds a sunrise and sunset display to the familiar celestial layout of stars, moon position and moon phases.
A 47mm white-gold case without traditional lugs
The first surprise is the case, which measures 47mm across and 12.39mm thick, making it one of the more assertive modern executions from Patek Philippe.
Its lugless architecture keeps the footprint cleaner than the number suggests, while the integrated rubber strap helps the watch sit closer and more securely on the wrist.
The white-gold case is finished with a cross-hatched pattern across the caseband and solid caseback, an X-shaped motif said to draw from the structural language of space modules.
It is a notable shift for the Celestial family, trading some of the classical restraint of earlier references for a sportier and more architectural presence.
The sky over Geneva with sunrise and sunset added
The dial remains the emotional center of the watch, presenting the night sky as seen from Geneva or any city on the same northern-hemisphere latitude.
A transparent sapphire disc carries the star chart, while the Milky Way is printed beneath it to create a layered sense of depth.
An ellipse printed under the crystal frames the portion of the sky currently visible from that latitude, turning the display into a continuously moving astronomical scene.
At the perimeter, Patek Philippe uses the date scale for more than the date, which is indicated by a red hammer-shaped hand.
Separate hands show sunrise on the right side of the dial and sunset on the left, which also explains the unconventional placement of the date numerals around the outer track.
A patented answer to seasonal time changes
Sunrise and sunset complications can become awkward when clocks move between Summer Time and Winter Time, because the indications need to remain aligned with local time.
For the 6105G, Patek Philippe uses a patented adjustment system operated by two correctors at 9 and 10 o’clock, allowing the wearer to move the time forward or backward by one hour while keeping the sunrise and sunset displays synchronized.
The watch also uses two crowns, with the 4 o’clock crown handling winding and time setting, and the 2 o’clock crown reserved for the astronomical functions.
The Caliber 240 grows into a complex astronomical movement
Inside is the new Caliber 240 C LU CL LCSO, an evolution of Patek Philippe’s ultra-thin automatic 240 architecture.
Despite the added astronomical modules, the movement measures 7.93mm thick, runs at 3 Hz and offers a power reserve of 38 to 48 hours.
Winding is handled by the familiar off-center 22K gold micro-rotor, one of the signatures of the Caliber 240 family.
Patek Philippe chose a solid caseback rather than an exhibition back, a practical decision given that the 38mm movement sits inside a much broader 47mm case.
The closed back also gives the brand room to continue the case’s geometric engraving and place a Calatrava cross at the center.
A Celestial for the collector who wants the unusual Patek
The Ref. 6105G-001 is not a discreet perpetual calendar or a conservative dress complication, and that is exactly what makes it interesting within Patek Philippe’s current catalog.
It combines a poetic astronomical display with a case and strap treatment that feel intentionally outside the brand’s safest design habits.
At $437,610 USD, the Celestial Sunrise and Sunset is aimed at a very specific collector, likely someone who already owns the expected Patek Philippe landmarks and wants a complicated watch with a more experimental personality.
For that buyer, the 6105G is less about daily practicality than about seeing one of Swiss watchmaking’s most traditional houses stretch an old astronomical idea into a larger, sharper and more modern form.
