Citizen CB1 Series Instruction Manual page 40

Adjusting the time/calendar manually
Month and year indications
The year and month are indicated by the second hand when you adjust the time and
calendar manually. The date is corrected automatically at the end of each month if the
number of years passed since the last leap year and month are set correctly.
Nov.
Oct.
Sept.
Aug.
Jul.
Jun.
The position of the second hand shows the month.
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Dec.
Jan.
Feb.
Mar.
Apr.
May
e.g.
When it is March in the second year since the
leap year.
Each minute mark denotes the number of years
since a leap year.
Leap year
1st year since leap
year
2nd year since
leap year
3rd year since leap
year