Moons of Theras

The world of Theras has three distinct moons: Luna, a manifestation of Lune, has a cycle of 10 days and shines white. It is the largest moon and usually shines the brightest. Sehaine, a manifestation of Sehanine Moonbow, has a cycle of 30 days, with its hue shifting from white (winter) to green (spring) to orange (summer) and then to blue (autumn). It is slightly smaller than Luna and doesn't shine as bright, though it shines slightly brighter than Luna at the midseason tenday. Kas'shi, a manifestation of Nyx, has a cycle of 360 days, and shines very dimly. It is generally speaking the smallest moon, and shines in two shades of pink, depending on whether it moves towards (tango pink) or away (lavender pink) from Theras.

Kas'shi in retrograde	The full phase of Luna	The full phase of Seahine in Autumn

(late Jak'shen)	(pentday night)	(16th of Dacius)

The moons shed their own light.

Phases

Waning

Sehaine and Lune wane radially from a certain spot near their perimeter, and become increasingly darker, until they are pitch-black; they can still be discerned as they block the stars behind them and seem to absorb all light. Kas'shi does not wane per se, rather increasing or decreasing in size due to having an extremely elliptical orbit. It is closest on the night of the 30^th of Fonacius, when it is as large as Sehaine, and the farthest away on the nights of the 1^st of Arn-Wint and the 30^th of Lizizil, when it cannot be seen regardless of amplification; it cannot even be observed by magical means, with all attempts causing temporary blindness.

Uncrescention

An uncrescention is a phenomena where either Sehaine or Lune wane in an unusual non-uniform manner, as Nyx's fingers can be visibly seen enveloping the moon in darkness. An uncrescent moon occurs only at the middle of the cycle, when the moon is full; that means uncrescentions may only occur on sekday nights, and Sehaine may become uncrescent only on the second sekday of the month. The unsettling sight of an uncrescent moon is a bad omen in most cultures, and is indeed ominous in a literal sense. It causes concurrent phenomena, either directly or indirectly:

Behvioral changes, such as aggression in wild animals and humanoids

Maritime disasters, such as vessels capsizing or becoming lost, and especially shipwrecks.

Deadly fire related accidents, such as house fires, collapsed chimneys, and unexpectedly powerful evocation spells.

General emotional distress among the clergy of the uncrescent moon's goddess accompanied by specific feelings, such as frequent déjà vus, a crippling sense of impending doom, paranoia, and minor auditory hallucinations of a scraping sound.

Unreliability in moon-related phenomena, such as reduced control over shifting forms for lycanthropes and druidic rituals failing with no discernible cause for failure. Approximately 0.8% of all documented acquired lycanthropy instances occurred during an uncrescent moon, according to a 1049 AB meta-analysis conducted in Sophia-Hold.

Additionally, an uncrescent moon is a multi-faceted message from Nyx. To her followers, it is an order to further their goals and a call to arms against the uncrescent moon's goddess and her followers. By the virtue of the latter, it is also a formal declaration of war a holy war against said goddess; this war lasts for as long as the moon remains uncrescent, which is ten days for Lune and thirty days for Sehaine. Finally, it is a a direct assault on Lune and Seahine, as Nyx grabs a physical manifestation of them and takes it away.

Waxing

Calendar

The cycle of the moons is and was used for timekeeping. Luna dictates the duration of a tenday, Sehaine dictates the duration of a month, and Kas'shi the duration of a year. However, different cultures chose to divide the year in different ways, with several documented calendars.

The Ervenian Calendar is used by the vast majority of cultures on Theras, though under different names. Regardless, the months follow the same order and even have the same names; this phenomena is consistent across different cultures and different races.

The Andorian Count, originating in Epeoris, is the only calendar used on more than a single continent, other than the Ervenian. It is used by followers of the Andorian Pantheon, now present on the continent of Rakion following the Kadian Invasion.

#	Ervenian Calendar	Sehaine's Color	Season	Andorian Count	#
1	Arn-Wint	Bright White	Winter	First Frost	10
2	Bazingadil	Greenish White	Winter	Lord's Wrath	11
3	Coppernium	Light Green	Spring	Last Rain	12
4	Dacius	Deep Green	Spring	First Bloom	1
5	Ernius	Pale Green	Spring	Mother's Gift	2
6	Fonacius	Pale Orange	Summer	Last Harvest	3
7	Gylevail	Deep Orange	Summer	First Dawn	4
8	Haldain	Pale Purple	Summer	Father's Gaze	5
9	Ilvin	Pale Royal Blue	Autumn	Last Judgement	6
10	Jak'shen	Bright Blue	Autumn	First Word	7
11	Kankajak	Pale Blue	Autumn	Sage's Wisdom	8
12	Lizizil	Bluish White	Winter	Last Dawn	9

The Ervenian calendar first documented use was circa 6000 BB in Ervenius' Draught, from which it gets it name; over a period of what seems to be no more than a century, almost all cultures shifted towards it. This change was evident and documented in the Menedynn Empire, the Old Ansko Empire, and the coblyn demesnes, which all used their own unique calendar prior; the Nahrso Empire is believed to have used the Ervenian calendar since its establishment, though this is a matter of dispute amongs historians.

Ervenian Month	Origin of Name	Meaning in Common
Arn-Wint	Dwarven	Extreme of Winter
Bazingadil	Dwarven	Edge of Cold
Coppernium	Dwarven	Rise of Copper
Dacius	Menedynn	Ear of Barley
Ernius	Menedynn	Time of Bloom
Fonacius	Menedynn	First Fruits
Gylevail	Elven	Tide of Warmth
Haldain	Elven	Summer Solstice
Ilvin	Elven	Harvest Wishes
Jak'shen	Draconic	Time of Shedding
Kankajak	Draconic	Shedding's End
Lizizil	Draconic	Hiemal Conception

Andorian Count	God Associated with Month	Important Holy Days
First Bloom	Nymm	- - - - - - -
Mother's Gift	Nymm	Harvest Festival
Last Harvest	Nymm	- - - - - - -
First Dawn	Rhaan	Sun's Crest
Father's Gaze	Rhaan	Days of Judgement
Last Judgement	Rhaan	Sun's Law
First Word	Talador	The Unveiling
Sage's Wisdom	Talador	Days of High Magic
Last Dawn	Talador	Queen's Liberation
First Frost	Eyre	- - - - - - -
Lord's Wrath	Eyre	The Cold March
Last Rain	Eyre	- - - - - - -

The Andorian count is based on the seasons, and is ordered as an analogy between the creation myth accepted by followers of the pantheon and the assosciated deity's role in it: Nymm, the mother, gave birth to it; Rhaan, the father, provided for it; Talador, the sage, taught it; and Eyre, the lord, protected it. Each god has a month during which they are celebrated, correlating to the last month of the season and the last instance of each color in Sehaine's phases.