echo/neutra AVERAU 39 Moon phase “Big Moon”

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  echo/neutra AVERAU 39 Moon phase “Big Moon”

  The moon completes its lunar cycle in 29 days, 12 hours, 44 minutes, and 2.8 seconds. Since the center wheel makes one rotation per hour, a series of gear ratios (forming a reducing gear train) can be used to transition from one hour to approximately one lunar cycle.

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