Using As A Dual Time Watch - Citizen B877 Instruction Manual

C. USING AS A DUAL TIME WATCH
This watch allows the hour hand only to be corrected independently without
stopping the watch. It can be used as a dual time watch by setting the 24 hour
hand and hour hand to different times. After correcting the time, the hour hand
is used to indicate the "local time hours".
6
Hour (local time hour) hand
Minute hand
Local time
correction position
Crown
Normal position
24 hour hand