If your clock has a moving moon dial feature, these instructions will help you set it. To set the moon dial, apply slight pressure with your fingers to the front of the moon dial. Rotate the moon dial clockwise until the moon is directly below #15. Using an almanac or calendar, determine the date of the last full moon. Count the number of days past the last full moon. Turn the moon dial clockwise one click for every day past the full moon. The moon dial is now set and will indicate the proper moon phases as long as the clock operates continuously. If the clock stops for more that 24 hours, the moon dial will also stop, and must be reset when the clock is started again. If the moon dial will not rotate: As you face the clock, remove the top side panel, open the side door, or remove the back access panel. Look at the back side of the dial and locate the click spring. Put your finger at the tip of the click spring. Pull the click spring approximately 1/2" back away from the saw tooth moon dial and then release. The click spring and dial should snap into proper alignment. If the click spring is in its proper location and you still feel resistance when trying to advance the moon dial DO NOT FORCE IT. If the moon dial still cannot be easily advanced, this indicates that the gears that automatically advance the moon dial are engaged. To correct this, rotate the minute hand backwards three hours.