Pendulum clocks usually chime at the hour to let you know the time without looking at the clock. If the time has been adjusted improperly on your pendulum clock, usually caused by turning the hour hand instead of the minute hand, the chime might strike a different hour than the actual time. If this is the case, your clock might strike 2 o'clock when it is actually 7 o'clock. Adjusting the chime to the proper hour fixes the problem.
Open the glass on your pendulum clock so you have access to the hour and minute hands.
Move the minute hand on your clock to the 12 o'clock position and listen the number of chimes.
Slide the hour hand to the time the chimes struck.
Move the minute hand around to the 12 o'clock position again to be sure the clock strikes the hour it is set to.
Push the minute hand clockwise to the proper time.