The Aslan base their calendar and timekeeping
units on the period of Kusyu
(the Aslan homeworld) around Tyeyo, its star.
The Aslan year is the ftahea, 212.2 eakhau (Aslan days) long. A
is 319.98 standard days in
length; an eakhau is 36 hours long. Each eakhau has a unique
name; for convenience they are numbered from one to 212 and referred to
by number. To every fifth ftahea, a 213th eakhau is added to keep
the calendar in sync with Kusyu.
The Aslan also divide their ftahea into three raohfokh (seasons):
Aihros, Tralrea, and Ktaho. Aihros (Beginning) is the equivalent
of spring: the mating season for many animals and the time when annual
plant life grows from see. Tralrea (Growth) is the long season of
mild weather on Kusyu; it is the growing season (although in
this sense it referes to the growing of herd animals) and lasts 100
eakheau. Ktaho (Harvest) is the hunting season; it is short (only
30 eakheau) and a traditional time of Aslan hunts.
The Aslan calendar began counting time when the first Tlaukhu was
established. The data of 3658 corresponds to the Imperial date of 1120.
An Aslan date is stated in the same format as an Imperial date. A
three-digit eakhau number is followed by a hyphen and a four-digit
ftahea number. For proper identification in the Imperium, the
date is usually followed by the word Aslan. For example, 201-3644
Aslan is the 201st day of the 3644th year of the Aslan calender; it is
equivalent to 000-0000.
The planet Kusyu has only minimal axial tilt and orbital
eccentricity. there is little inthe way of astronomical cause for
seasons on the world, and the Aslan calendar has no seasons because
there is so little in its climate to cause them.