solar day contains 24 hours. A sidereal day, the exact measurement of celestial time, lasts 23 hours and 56 minutes. To do full justice to this minute but real difference (leap years serve to correct this time difference, accumulated over four years) with the greatest possible accuracy, Girard-Perregaux has endowed its Cosmos Infinity with two different globes, placed side by side above a grade 5 titanium tourbillon with black PVD coating.
At 3 o’clock, a globe which rotates 360° in 24 hours shows day and night for the displayed time. At 9 o’clock, a second globe, also rotating 360° but in 23 hours and 56 minutes, shows the constellations of the zodiac.
- 47mm titanium case. Handwound movement, power reserve of 57 hours. Black alligator strap with black and pink gold stitching, glossy effect between the scales.
The two globes are in polished onyx, micro-painted by hand in pink gold. The visible elements of the dial are also in black mirror-polished onyx – the dominant material of the entire 2020 Girard-Perregaux collection – and the movement is mounted in a 47mm-diameter titanium case.
Devoid of a winding crown for obvious reasons of balance and symmetry, its winding and regulating system is on the rear and consists of three engraved discs filled with luminescent ceramic indicating their respective functions.