A year on Tarleaux consists of four seasons (spring, summer, autumn, and winter), each of which is made up of ten weeks, each of which is made up of ten days. The individual weeks within a season are numbered rather than named. The days of the week are named: Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Lunday, Marday, Packday, Saturday. A specific date might be written as 1038 Spring 3 Lunday to indicate year 1038, season Spring, week 3, 7th day of the week.
In most parts of Tarleaux people attempt to rest from non-essential work on Sundays and Fridays. All but the poorest people have at least an unscheduled half day each week, but these vary from person to person.
The first day of each season is a major holiday, celebrated throughout Tarleaux:
Spring 1 Sunday is also known as First Light. Older people rise early to greet the dawn, while younger folk tend to simply stay awake carousing through the prior night. At dawn communities gather to sing hymns of praise to the gods and share a simple traditional regional meal.
Summer 1 Sunday is also known as the Festival of Feats and Feast. Competitions of various kinds are held throughout the day in each community, and the winners are celebrated in a vast, communal evening meal.
Autumn 1 Sunday is also known as The Day Of Rememberance. It is celebrated in different ways in different parts of the world, but all of them involve some type of reverence for ancestors or mourning for recently deceased family / community members.
Winter 1 Sunday is also known as Bright Night involves the use of bonfires, torches, lanterns, and fireworks to sybolically hold back the coming darkness.
Other holidays tend to be regional.