The Gehennese calendar is lunisolar: the year begins at the first new moon after the northerly solstice, and consists of eleven or twelve months of 32 days. In the Archaic Period the years are named for the monarch or chief magistrate, and numbered within his tenure of office, but in the Classical Period and the Decadent Period the years are numbered from the Eldest of Days (see AED).

The Gehennese month begins at New Moon, and is thirty-two days long. As far as anyone has yet been able to tell, the lunar month is exactly 32 days, and there is no known need to intercalate days into the month. Months are customarily known by numbers within the year: they are not named.

Each month is divided into four weeks of eight days by New Moon, First Quarter, Full Moon, and Third Quarter. These are the occasions of market days, militia drill, and a general holiday.

A date is given as day's number within the week, the number of the month, and the the phase of the moon, e.g. "the fourth day of the sixth full moon is the 180th day of the year".

Copyright © 1991 by Brett Evill. All rights reserved.