Date writing examples:
4E 642, Mid Harvest, Oathday 4th

There are 28 days in a month, 7 days in a week, 3 months in a season, and 4 seasons in a year.
Days in the week
Dayrise  Rest, religion [day]
Sunday  Work
Toilday  Work
Oathday  Work, pacts signed, oaths sworn
Wealday  Work
Moonday  Work
Dayfall  Work, religion [night]

Seasons of the year
Dragonswake (spring)
Dawnrise (summer)
Harvest (fall)
Frostfall (winter)

Months are referred to as early, mid, or late of a season.
Ex: Early dragonswake, which is the first month of the year. Mid dragonswake is the 2nd month, etc.

The Solstice is the first day of frostfall. The solstice is the longest day of the year, but proceeds a long term darkness. There is 20 hours of daylight on the solstice. Once the sun finally sets it is followed by an eclipse and the sun does not rise again until the first day of Dragonswake. The daylight of the solstice is filled with revelry, until the sunset when the people prepare for the coming darkness. The final four hours of the solstice (the first four hours of darkness) is usually spent in prayer.

Years are dated by era, which are significant time periods in history.

First Era
The first era is the Great Migration. It marks the migration of the races from Premathia to Talmirith upon it's discovery. During this era which spanned a thousand years, the realm of Premathia was settled and the ancient Ludi, the original inhabitants of Talmirith, were discovered.

Second Era
The second era is the Reformation. It marks when the Velynxian War ended, the Ludi seemingly wiped from existence, and the world started recovery from the war.

Third Era
The third era is the age of dusk. It marks when the sun's light extinguished. The world was cast into darkness and overwhelmed with horrid monstrosities and creatures of the night.

Fourth Era
The fourth era is the age of dawn. It marks the sun's light reigniting, and the world returning to life and peace. During this time the Dragonshards were created and used to put the dragons of Talmirith into deep magical slumber.

Fifth Era
The fifth era is the age of skyfall. It marks the world being torn asunder and changed irreversably by a great cataclysm caused by Musenth bringing a flaming mountain down onto the realm to balance the scales of evil and good after a good Ka'Viir was slain and his slayer joining the evil pantheon as a new Ka'Viir. The world is once more cast into turmoil and metaphorical darkness.