• Calibers 353 and 355

They do not have the quick change feature, as they are older. Therefore, to advance the date, the hands must be turned every 24 hours, and it can be adjusted forward or backward, depending on the direction in which the hands are turning.

So, turning the hands clockwise will allow you to set the date forward, and turning them counterclockwise will allow you to set the date backward.

• Calibers 502, 503, 504, 560, 561, 562, 610 and 611

In addition to the previous method of turning the hands every 24 hours, advancing the date, you can turn the hands until the date advances and then turn the hands counterclockwise until around 9:00 p.m. or until you feel a “click” on the calendar. Then, advance the hands again after midnight and the date will advance. Repeat this process until you reach the desired date.

• Calibers 563, 564, 565, 750, 751, 752 and 613

They also have a quick change feature to adjust the date (day of the month).

Unlike previous calibres, to advance the date, you must pull the crown to the second position (the first position is for adjusting the hours and minutes). Then, by carefully pulling and pushing the crown towards the case, the date will advance day by day. Do not use this feature when the hands are between 9pm and 3am, as it may damage and jam the calendar wheels.

By Hector Eng