Patek Philippe Annual Calendar: Unpacking the Week Number Complication

Key Points from the Discussion

• The week number complication is adjusted independently via a dedicated pusher on the left side of the case, separate from the day and date adjustments.
• The week number's trigger mechanism is likely dependent on the week number and the date, rather than the specific day of the week.
• There is speculation whether the week number advances every seven days regardless of the date or day, potentially accommodating different cultural definitions of a week's start.
• A question arises whether the 'trigger' day for the week number change can be customized to a different day of the week.