Buy the 2015 Old Farmer's Almanac!
First, always consult yourFirst, always consult your physician when planning surgery. Capricorn influences the knees.  You want to avoid dates around the time when the Moon is in Capricorn. See the annual Old Farmer's Almanac for the Moon's Sign Calendar: For instant access to the Moon's signs download our 15-month Moon's Sign Calendar here for a small fee:

Shop Wind Bells in the Almanac General Store