The challenge of leap year has led to the development of the perpetual calendar - a complication that has been part of the A. Lange & Söhne repertoire since the late 19th century.

Having spent all week on the sunny shores of Lake Geneva for Watches and Wonders 2025, I've got a pretty good insight into the industry at large. This year offered further proof that the luxury ...

Having spent all week on the sunny shores of Lake Geneva for Watches and Wonders 2025, I've got a pretty good insight into the industry at large. This year offered further proof that the luxury ...

Unlike its chronometric cousin, the annual calendar—which displays the day, date and month for an entire year, calculating which months have 30 or 31 days—the perpetual calendar is built to go ...

If a perpetual calendar were kept continually operating, it would correctly adjust until the year 2100, when our Gregorian calendar skips the normal leap year. At that point, the mechanism ...

Perpetual calendars maintain the classic layout of the other calendar watches, with day, date, month, time and often moonphase displays, but they usually add an indication of the current position in ...

5 most impressive perpetual calendar watches for a leap year: haute horology from Bulgari, A. Lange & Söhne, IWC, Glashütte Original and H. Moser & Cie on February 29, 2024 ...

Frederique Constant produced its first in-house automatic perpetual calendar with a moonphase in 2016. It was an elaboration on the 700 series module featuring a scant 197 components, which made it ...

Normally, perpetual calendars all look fairly similar, ... This year, I think we saw the start of an era where the complication not only becomes more accessible, but more playful.