The watch is provided with a date and day of the week function and is so designed that the date and day of the week change once every 24 hours.
The date changes around midnight, and the day of the week changes at around 4:00 a.m. If AM/PM is not properly set, the date will change at 12 o’clock noon, and the day of the week will change at around 4:00 p.m.
To adjust the date only on a day such as the next day after the completion of a month that has less than 31 days (February, April, June, September and November), please refer to Date adjustment at the end of the month.
Do not set the date or the day of the week between 9:00 p.m. and 4:00 a.m.
Amending the date or the day of the week during this time period may cause problems such as the date or the day of the week failing to change the next day or may cause damage.
Make sure that the watch is working.
Unlock the crown.
Pull out the crown to the first click.
To carry out the procedure, please make sure that the watch is in working state. Please wind the mainspring when the watch is not working.
The date and day of the week can be set by turning the crown.
Turn it until the previous day’s date/day of the week appears.
Ex.) To display the date as “6,” then set this to “5.”
Turn the crown counterclockwise to set the date, and turn the crown clockwise to set the day of the week.
For models with bilingual day of the week displays, choose the language of your preference when setting the day of the week.
Pull out the crown to the second click and set the time.
Pull out the crown to the second click when the seconds hand is at the 12 o’clock position; the seconds hand stops on the spot.
Turn the crown to advance the hands until the date changes to the next. The time is now set for the A.M. period. Advance the hands to set the correct time.
To set the time correctly, be sure to turn back the minute hand a little behind the desired time and then advance it to the exact time.
Push the crown back in to the normal position in accordance with a time signal.
Relock the crown.
The seconds hand immediately starts moving.
The telephone time signal service is helpful for setting the seconds hand exactly.
Date adjustment at the end of the month
It is necessary to adjust the date at the end of February and 30-day months.
Ex.) To adjust the date in the A.M. period on the first day of a month following a 30-day month
The watch displays “31” instead of “1.” Pull out the crown to the first click.
Turn the crown counterclockwise to set the date to “1” and then push the crown back in to the normal position.
Return the screw down crown fully to its original position.
Avoid amending the date when the watch is displaying between 9 PM and 4 AM. Doing so may cause damage.