In 1884, the International Meridian Conference in Washington D.C. established the system of standard time and the division of the globe into 24 time zones. Ever since Patek Philippe’s engineers and watchmakers have been using their ingenuity to manufacture watches with multiple time zones that are both highly legible and easy to use.

Reference 5524 was first introduced by Patek Philippe at Baselworld 2015 to pay tribute to the courageous pioneers of aeronautics, recalls milestones in aviation, and touches upon the fact that the celebrated manufacturer also contributed to the conquest of the skies. The masculine model features a second time zone and date display with local time, reflecting Patek Philippe’s tradition in aviator’s watches.