Lunar sun dial, also referred to as moondial, is only accurate on the night of the full moon. Each night following, it becomes an additional (on average) 48 minutes slow, while every night preceding the full moon it is (on average) 49 minutes fast, if there is even enough light by which to take a reading.
Thus, one week to either side of the full moon the moondial will read 5 hours and 36 minutes before or after the proper time. More advanced moondials can include charts showing exact calculations to get the correct time, as well as dials designed with latitude and longitude. Moondials are very closely associated with lunar gardening (night-blooming plants) and comprehensive gardening books will often refer to them; indeed, the original biodynamic farming.
#spain #mallorca #palma #moondial #sundial #biodynamic (at Palma De Mallorca, Spain)