Calendar of Ileose

Time is measured on Ileose using charts and other devices to replicate the Draconic Calendar, a massive construct believed to be near the equator of the planet that was built during the time of the Empire. The calendar consists of cycles of various lengths that combine to create an accurate measurement of time on the planet.

A series of marks would be made to represent the date in texts and inscriptions. The marks start with the longer time periods and work their way down to the mark for a single day. The first mark would be the period of the long cycle followed by the period of the short cycle. A number, 1 to 72, is used to indicate the year, followed by a mark for the month. Finally, a mark is made for the week and then another number (1 to 10) is used to indicate the day. Some sages and historians add an additional mark to the beginning of the notation to indicate the ‘Age’ (see below), but this additional mark is not needed except with events in the extreme past.


Each month of the Ileosian calendar is made up of 3 weeks that are made up of 10 days each. The days themselves are simply marked as 1 to 10 without having a name. The weeks are marked with a draconic symbol that indicates if it is ‘rising’, ‘respendent,’ or ‘descending.’


The Ileosian calendar is measured using the sun’s position in terms of a series of constellations in the night sky. This is similar to an Astrological calendar. Each year starts with an equinox and ends on a special day that is set aside for the end of the year. Every season consists of 30 days with a ‘transitional’ day every 3 months. These days fall on both Equinoxes, both Solstices and then an extra day at the end of the year. The table below summarizes the calendar year on Ileose.

Month Name Days
Spring Equinox Arcades Sabboth 1
March Bahamut 30
April Aasterinian 30
May Hlal 30
Summer Solstice Chromium Rhuell 1
June Astilabor 30
July Io 30
August Piru 30
Autumn Equinox Nicol Bolas 1
September Tiamat 30
October Chronepsis 30
November Lendys 30
Winter Solstice Palladia Mors 30
December Falazure 30
January Garyx 30
February Tamara 30
End of Year Vaevictis Asmadi 1

Short Cycle

Once every 72 years, an additional day is added to the calendar to mark the end of the current cycle. The day, known as ‘Dark’ is added the day after Vaevictis Asmadi and before Arcades Sabboth. These cycles are each named for one of the ‘transitional’ days and follow that order. A full cycle takes 360 years to complete. Common people on Ileose are somewhat familiar with the short cycle. They most likely wouldn’t know what period they are in, but they could probably tell you how long it was since the last time ‘Dark’ arrived.

The table below summarizes the progression of cycles.

Name Years
Arcades Sabboth 72
Chromium Rhuell 72
Nicol Bolas 72
Palladia Mors 72
Vaevictis Asmadi 72


This day is surrounded by a lot of superstition. Most cultures have some amount of stigma surrounding any person born on this day. It is seen as a day of bad luck and il-omen. The Dark that ends Vaevictis Asmadi is considered especially ominous. If combined with some other celestial event (like an eclipse or meteor passing by), the implications would be especially dark. This day is not considered to be a part of the year the precedes it or the year the follows it.

The next dark is approaching at the end of the current year (2016) and many sages/historians are watching the approaching date with interest.

Long Cycle

When the short cycle goes back to Arcades Saboth (once every 360 years) another cycle also begins. This cycle is the long cycle which consists of twelve periods of 360 years. These cycles follow the calendar months in order. A complete long cycle is called an age consisting of 4320 years. Only sages and historians are aware of the long cycle and commoners wouldn’t have any idea of the ages on this scale.

Name Years
Bahamut 360
Aasterinian 360
Hlal 360
Astilabor 360
Lo 360
Piru 360
Tiamat 360
Chronepsis 360
Lendys 360
Falazure 360
Garyx 360
Tamara 360

Cycle of Ages

Sages and historians argue that there is an additional cycle that follows the long cycle. This cycle would be the cycle of ages and would carry a repeating cycle of 4320 year periods. Each of the periods would be named for one of the transitional days. The cycle would start with Arcades Sabboth, followed by Chromium Rhuell, followed by Nicol Bolas, etc…

Unlike the previous cycles described above, this ‘Cycle of Ages’ is not part of the physical Draconic calendar. In theory, one could continue this process into infinity with another count being made up of five ages (21,600 years) but this is cumbersome and nobody has bothered with that level of measurement.

Player Knowledge

This calendar is based on the Sidereal Year. I took the basic information listed at that site and expanded on it to create the information above. All of the names listed for the months and days are taken from either Magic the Gathering, or Races of the Dragon (most of them come from Races of the Dragon). The people on the world would use the notation system described above but it isn’t really necessary to get into that level of detail (as I don’t know how to duplicate the symbols they would use on this site). Instead, you can use a standard date notation using the timeline to determine the year you wish to mark (transitional days would be part of the previous month in this case).


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