I've been wanting to build a simple mechanical calendar for a long time, and this Perpetual Calendar is just that...simple, and yet it does so much. This calendar knows the correct end of each month and advances itself. Besides the day of the week, day of the month, month and sun sign, it also shows the moon's phases to an accuracy of one moon phase day every three and a third years. The calendar is perpetual and knows Leap Years and will only need to be reset one day in the year 2100 (and again in 2200 and 2300...I can hardly wait!). As you know, below the equator the moon is seen to be turning the opposite direction. This calendar has been designed to compensate for whichever side of the Equator you live.

The instructions take you on a simple step-by-step build from mounting the frame onto your wall, to completed calendar.

Not being able to leave well enough alone, we have added to the original plans a new self-resetting mechanism. With this addition all that is required is to manually push the main lever to the left and release--the self-resetting clockworks mechanism does all the rest. It is so neat now to be able to stand back and watch this newly mechanized calendar going through all of its gyrations--especially at months end! I have redesigned the plans so that the self-resetting mechanism is an optional, easy add-on to the basic lever driven Perpetual Calendar.

You can see this Self-Resetting Perpetual Calendar in action on the video player below, or click here: Perpetual Calendar V.2 with Self-Resetting Option

Perpetual Calendar Woodworking Plans $42

Complete instructions and plans included in both pdf and dxf formats.

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