moondial

Английский Язык - Английский Язык

Определение moondial в Английский Язык Английский Язык словарь

An instrument for telling time, like a sundial but relying on the light of the Moon

Moondials are time pieces similar to a sundial. The most basic moondial, which is identical to a sundial, is only accurate on the night of the full moon. Every night after it becomes an additional 48 minutes slow, while every night preceding the full moon it is 48 minutes fast, assuming there is even enough light to take a reading by. 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

Этимология

() moon and sundial