Patek Philippe Annual Calendar

The Patek Philippe Annual Calendar was introduced in 1996 with the Ref. 5035J. It revolutionized calendar watches by balancing technical brilliance with everyday usability. Unlike standard calendars needing frequent adjustments or complex perpetual calendars, it automatically tracks months with 30 and 31 days. It requires just one manual correction per year at the end of February. This innovation marked a turning point in haute horology. It makes sophisticated calendar complications more accessible without sacrificing the prestige and craftsmanship Patek Philippe is known for. Over the years, the brand has integrated this function into 17 different models, refining its design and mechanics while maintaining its timeless appeal.