Citizen E87 Manual page 31

Adjusting the calendar
Month indicator
Date
indicator
30
5. Rotate the crown to adjust each setting.
Month indicator:
• Rotate the crown right to move the second hand to the next
month. Months cannot be adjusted by turning the crown
counterclockwise.
Date indicator:
• Rotate the crown right to move the function hand four
times clockwise and the day proceeds by one.
• Rotate the crown left to move the function hand
counterclockwise four times and the day recedes by one.
• The day indicator will not move continuously. Adjust date
one day at a time.