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.

Some horology enthusiasts would argue that ultra-complicated timepieces are frivolous – particularly the perpetual calendar function, which is only useful for leap years Regardless of your ...

Once every four years, extremely complicated watches known as perpetual calendars get their moment to shine—and delight the owners of these five- or six-figure timepieces.

Over the course of centuries, a calendar with no leap years would eventually become totally out of sync with the seasons as we know them. Let’s see what would happen. Leap years exist because we ...

While February usually has 28 days, every four years it gets an additional day, famously known as leap day. Here's why it exists.

Happy Leap Day! The rare date Feb. 29 is coming up − though it only crops up every four years, it is indeed real. But what about Feb. 30 or March 32?

When the Julian calendar was changed to the Gregorian calendar in 1582, the tradition of adding a leap day to February continued. 2024 is party time for leap year babies ...

Why do we have Leap Day? The Leap Year rules were originated in the Julian Calendar, established in 46 BC by Julius Caeser, but the system wasn't perfect.

IWC Schaffhausen is a stand-out brand, responsible for many firsts in the watch world, including a moonphase accurate to nearly 600 years. Now, it incorporates that feature into the Portofino ...

Feb. 29 comes only once every four years (most of the time), but why do we need leap years and how did they come about?

In honor of Leap Day, this read is for the history nerds. Ever wonder how America caught our calendar up with the rest of the world? In September 1752, we skipped over 11 days.