Continuity/Roulean Calendar and Portal Years

Over the life of Asheron's Call, we have been presented with several Roulean Calendar dates, and how they relate to the Portal Year calendar system used on Dereth.

Beta
The text The Reign of Alfrega has several dates in it, and also outlines the general history of Aluvia. Stormwaltz also provided a list of dates that he worked from when writing the Reign of Alfrega in beta.



It is listed as having an unknown end date, but lasting 10 years, implying it is the current reign.
 * bgcolor=#d0d0d0| '''Roulean Year
 * bgcolor=#d0d0d0| '''Event
 * 787 RC || Reign of Pwyll II begins. It lasts 17 years.
 * 804 RC || Viamont invades Aluvia, reign of Pwyll II ends.
 * 804 RC || Reign of Alfric begins. It lasts 20 years.
 * 824 RC || Reign of Alfric ends.
 * 824 RC || Reign of Theolaud begins. It lasts 30 years.
 * 854 RC || Reign of Theolaud Ends.
 * 854 RC || Reign of Alfrega begins. It lasts 14 years.
 * 860 RC || Public resistance of the Orts begins.
 * 861 RC || Tharesun and Harlune seek out the hidden camps of Orts.
 * 868 RC || 83 Orts are captured in Celdon.
 * 868 RC || Reign of Alfrega ends.
 * 868 RC || Reign of Osric begins. It lasts 31 years.
 * 899 RC || Reign on Osric ends.
 * 899 RC || Reign of Pwyll III begins. It lasts 25 years.
 * 924 RC || Reign of Pwyll III ends.
 * 924 RC || Reign of Cellric II begins. It is not known how long it lasts.
 * 1311 RC || After approximately 400 years pass, the reign of Cedraic III begins.
 * 861 RC || Tharesun and Harlune seek out the hidden camps of Orts.
 * 868 RC || 83 Orts are captured in Celdon.
 * 868 RC || Reign of Alfrega ends.
 * 868 RC || Reign of Osric begins. It lasts 31 years.
 * 899 RC || Reign on Osric ends.
 * 899 RC || Reign of Pwyll III begins. It lasts 25 years.
 * 924 RC || Reign of Pwyll III ends.
 * 924 RC || Reign of Cellric II begins. It is not known how long it lasts.
 * 1311 RC || After approximately 400 years pass, the reign of Cedraic III begins.
 * 899 RC || Reign of Pwyll III begins. It lasts 25 years.
 * 924 RC || Reign of Pwyll III ends.
 * 924 RC || Reign of Cellric II begins. It is not known how long it lasts.
 * 1311 RC || After approximately 400 years pass, the reign of Cedraic III begins.
 * 924 RC || Reign of Cellric II begins. It is not known how long it lasts.
 * 1311 RC || After approximately 400 years pass, the reign of Cedraic III begins.
 * 1311 RC || After approximately 400 years pass, the reign of Cedraic III begins.
 * 1311 RC || After approximately 400 years pass, the reign of Cedraic III begins.
 * Present Day || "Good King Cedraic" reigns in Aluvia during this time.
 * }
 * }
 * }

At this point, these dates exist more or less in a vacuum; there is no direct connection to the Portal Year system. One could theorize that, if Good King Cedraic and Cedraic III are the same person, and Cedraic III's reign has lasted 10 years since 1311, the "present day" in the Roulean Calendar is 1321. One could also reasonably assume that "present day" could be anywhere from -15 PY, when Aluvians first began to arrive in Dereth, to 10 PY, when Release occurs.

AC:DM
With the release of Asheron's Call: Dark Majesty, players were given the AC:DM CD Lore. Among these files was the Ages of the Empyrean, which outlined the history of Auberean. It also contains a few valuable pieces of information regarding the Roulean Calendar:




 * bgcolor=#d0d0d0| '''Eipoth
 * bgcolor=#d0d0d0| '''Portal Year
 * bgcolor=#d0d0d0| '''Roulean Year
 * bgcolor=#d0d0d0| '''Event
 * ME 564
 * ''-15 PY*
 * 1261 RC
 * Humans arrive on Dereth.
 * ME 579
 * 0 PY
 * 1276 RC
 * Olthoi Queen is defeated.
 * ''ME 591**
 * 12 PY
 * 1284 RC
 * Marae Lassel opens.
 * colspan=4| *Stated in numerous other sources. **extrapolated from 1:1 ratio of Eipothi to PY.
 * }
 * Marae Lassel opens.
 * colspan=4| *Stated in numerous other sources. **extrapolated from 1:1 ratio of Eipothi to PY.
 * }
 * }

We start running into issues here:

First, our theory about the beta timeline's present day being 1321 RC are invalidated - that date has yet to occur according to this new timeline. At the very least, this pushes back the timeframe for Cedraic III's reign. And at most, it pushes back all previous dates, if you stick to timespans Stormwaltz laid out.

Second, we have incosistancies in the ammount of time that is passing on each calendar. Between the first two events, humans arriving and humans defeating the Olthoi Queen, 15 years pass on each calednar. However, between the sescond and third events, 12 years pass on the Yalaini and Portal Year calendars, but only 8 years pass on the Roulean calendar.

Our options are:
 * 1) Ispar years and Auberean years are at a 1:1 ratio, and the last date is incorrect - it should be 1288 RC when Marae Lassel opens.
 * 2) Ispar years and Auberean years are at a 1:1.5 ratio, and the first date is incorrect - it should 1266 RC when humans first arrive on Dereth.

With only these three dates to work from, we can't really draw any conclusions. The easiest assumption is that the writers created a 1:1 ratio for Ispar:Auberean years, because it would be very easy to convert dates. But just because its the easiest, doesn't mean its correct.

The History of Auberean
In early 2003, Turbine released another timeline called The History of Auberean. We are presented new information:




 * bgcolor=#d0d0d0| '''Portal Year
 * bgcolor=#d0d0d0| '''Roulean Year
 * bgcolor=#d0d0d0| '''Event
 * -1441 PY || 324 RC || Jojiism founded.
 * -874 PY || ??? || The Yalaini open the first portal to Ispar. It goes to Aluvian lands.
 * -869 PY || 704 RC || Viamont invades Aluvia. The reign of Pwyll II ends and the reign of Alfric begins.
 * -779 PY || 765 RC || Reign of Alfrega begins.
 * -779 PY || 765 RC || Harlune stays behind on Ispar during an expedition.
 * -758 PY || 779 RC || Reign of Osric begins.
 * -540 PY || 924 RC || Gharu'n armies seige the Roulean capital of Tirethas.
 * -358 PY || 1046 RC || Emperor Kou unites the Sho under his rule.
 * -15 PY || ??? || The portals created by the Sundering begin to appear on Ispar in the Aluvian lands, and the first humans begin to arrive on Dereth.
 * }
 * -758 PY || 779 RC || Reign of Osric begins.
 * -540 PY || 924 RC || Gharu'n armies seige the Roulean capital of Tirethas.
 * -358 PY || 1046 RC || Emperor Kou unites the Sho under his rule.
 * -15 PY || ??? || The portals created by the Sundering begin to appear on Ispar in the Aluvian lands, and the first humans begin to arrive on Dereth.
 * }
 * -358 PY || 1046 RC || Emperor Kou unites the Sho under his rule.
 * -15 PY || ??? || The portals created by the Sundering begin to appear on Ispar in the Aluvian lands, and the first humans begin to arrive on Dereth.
 * }
 * }
 * }

A quick look at this information reveals that the dates created by Stormwaltz in the beta regarding Aluvian history have been retconned. Aluvia was no longer invaded in 804 RC, it was invaded in 704 RC, for example.

By examining these dates, another thing is immediately clear: spar years and Auberean years are not at a 1:1 ratio, they are at a 1:1.5 ratio. For every year that passes on Auberean, one and a half years pass on Ispar, and for every year that passes on Ispar, two-thirds of a year passes on Auberean.

Upon closer exanimation, one can reach the following formulas for converting between PY and RC:
 * RC = (2/3) * PY + 1284
 * PY = (3/2) * RC - 1926

However, If you plug in the dates from the AC:DM CD Lore in these formulas, it won't work. So those dates could also be considered retconned.

Conclusion
If you need to convert between Portal Years and Roulean Calendar, use the following formulas:
 * RC = (2/3) * PY + 1284
 * PY = (3/2) * RC - 1926

Due to the added complexity of not having a 1:1 year conversion, when a text mentions that something occured X years ago, simply assume they mean that many years on the planet where the event occured.

Example 1: The text The Rise and Fall of the Tanada states that the Tanada clan arose no more than 500 years ago. This text was discovered in 17 PY. 17 PY would be approximately 1295 RC. Since the event occurred on Ispar, we will subtract 500 from 1295. This puts the approximate date the Tanada clan arose at 795 RC.

Example 2: The lore article The Origins and Current Disposition of Viamont states that King Varicci di Corcosi launched simultaneous attacks on Roulea and Aluvia 20 years ago. This article was published in 2004, which corresponds to 15 PY. 15 PY would be approximately 1294 RC. Since the event occurred on Ispar, we will subtract 20 from 1294. This puts the approximate date of Varicci's invasions at 1274 RC.