How to Set a Perpetual Calendar Watch | Patek Philippe, IWC, Ulysse Nardin, H. Moser

Learn how to *set a perpetual calendar watch* the right way. In this “How-To” episode, Tim Mosso explains how to use and adjust perpetual calendars from *Patek Philippe, IWC, Ulysse Nardin, and H. Moser & Cie.* — including what to do, what not to do, and how to avoid costly mistakes. 📩 Contact: tmosso@the1916company.com for pricing & availability 💻 Shop luxury watches: https://www.the1916company.com --- ⏱️ *Timestamps* 0:00 – Introduction to perpetual calendar watches 0:13 – Patek Philippe Perpetual Calendar 5970G (tools, exclusion zones, moonphase setting) 2:56 – IWC Perpetual Calendar (Kurt Klaus system, crown-based setting, century slide) 4:45 – Ulysse Nardin Perpetual Ludwig (bidirectional quickset, avoids 2100 issue) 6:15 – H. Moser & Cie. Perpetual (no danger zone, simple month display, hidden leap year) 7:49 – Final thoughts on perpetual calendars --- The *perpetual calendar* is one of watchmaking’s most complex complications, tracking day, date, month, leap year, and moonphase — without adjustment for decades at a time. This guide shows you how to set, adjust, and care for these watches safely. 👉 Subscribe for more luxury watch tutorials: https://www.youtube.com/@the1916company/?sub_confirmation=1 👉 Download our app: https://onelink.to/1916-app 👉 Sign up for updates: https://www.the1916company.com/email-signup 👉 Follow us on Instagram: https://www.instagram.com/the1916company #perpetualcalendar #patekphilippe #iwc #ulysse #hmoser #watchtu