Eclipse (event)

An Eclipse it is, when one of the Moons of Britannia, either Trammel or Felucca, sometimes both at the same time, move in front of the sun for a short time, blocking the sunlight. During that time the regions of the planet in the core shadow are as dark as the night during the day. An eclipse normally only lasts for a few minutes.

An eclipse could happen naturally in Ultima VI, or could conjured with the spell "Eclipse".