Definition
The “annual calendar” in watchmaking refers to a type of watch complication that can automatically distinguish between months of 30 and 31 days, adjusting correctly at the end of each month. However, it requires a manual adjustment once a year, at the end of February.
Origin
The invention of the annual calendar is relatively recent in the long history of watchmaking, having been patented by Patek Philippe in 1996. This innovation was a response to the need for a more practical and less costly calendar than the more complex perpetual calendars.
Usage in the Watch Industry
The annual calendar is valued for its functionality and practicality. It is mainly found in luxury watches and is particularly useful for those who regularly wear the watch, as it reduces the need for frequent manual adjustments.
Examples
A notable example is the Patek Philippe Ref. 5035, the first watch to feature an annual calendar. Other brands, such as Rolex and Omega, also offer watches with this complication.
Synonyms
There are no exact synonyms, but related terms include “complete calendar” and “perpetual calendar”, each with their own distinct characteristics.
Related Terms
- Perpetual Calendar: A more advanced complication that automatically adjusts the dates for all months, including February in leap years.
- Complication: A feature in a mechanical watch that offers additional functions beyond displaying hours and minutes.
Tips
When looking for an annual calendar in a watch, check if the dial includes indications for the date, day of the week, and often the month. Remember that it will need a manual adjustment at the end of February.
Fun Facts
The creation of the annual calendar was significant because it filled the gap between the simple calendar and the perpetual calendar, offering a more affordable option with great functionality for watch enthusiasts.
