In the world of Eileria the calendar is 7 months long, each containing 7 weeks that in turn contain 7 days. Each 21 hour day in turn is broken into 3 7 hour long segments, one for sleeping, one for working and one for playing. They are called Nyx, Fortu and Ero respectively. On Fallin, the calendar months represent the old gods of the human races mainly. It has become the standard calendar used across the continent, mainly because it was the most prevalent due to the number of races using it.
The current year is 3004 and dates on the timeline use the shortened format of week/month/ year. The start date of the calendar represents the age when humans arrived on Fallin. Before that time was not really measured as far as we can tell.
The calendar is written in the format
Day/Week/Month/Year
This can be either words or numbers, so the first 3 would be
4/2/5/2005 would represent
Ei/Ast/Helios/2005.