View source for Common Year

In the ''[[World of Greyhawk]]'', the '''Common Year''', or '''CY''', is the basis of the common calendar. Years occurring before the Common Year are denoted with negative numbers, or are sometimes listed as "BCY" (Before Common Year). 

There is no Common Year zero (0 CY), as the reckoning began with the first year, 1 CY, which must be accounted for when converting other systems of reckoning years prior to 1 CY, such as the [[Baklunish Hegira]] (BH), [[Flan Tracking]] (FT), [[Oeridian Record]] (OR, also known as the Oerid Reckoning), the [[Olman Lunar]] (OL), the [[Olven Calendar]] (OC), [[Suloise Dating]] (SD), or the [[Touv Calendar]] (TC). 

Days, weeks, and months within the Common Year are reckoned using the [[Greyhawk Calendar]].
[[File:Greyhawk Calendar00.jpg|325px|right]]
==History==
The Common Year Reckoning is an [[Oeridian]], specifically an [[Aerdi]], creation, and replaced the Oeridian Record. The Common Year was established as the system of reckoning by Grand Prince [[Nasran I]] of the [[Great Kingdom of Aerdy]] in 645 OR (1 CY), when he declared universal peace throughout his the land, and took the title of [[Overking]].

==Equivalents==
===1 CY===
*Baklunish Hegira: 2660 BH (''[[World of Greyhawk Fantasy Game Setting|Folio]]''.5)
*Flan Tracking: 2151 FT (''[[World of Greyhawk Fantasy Game Setting|Folio]]''.5)
*Olven Calendar: 4463 OC (''[[World of Greyhawk Fantasy Game Setting|Folio]]''.5)
*Olman Lunar: 805 OL (''[[The Scarlet Brotherhood|tSB.]]''64)
*Oeridian Record: 645 OR (''[[World of Greyhawk Fantasy Game Setting|Folio]]''.5)
*Suloise Dating: 5116 SD (''[[World of Greyhawk Fantasy Game Setting|Folio]]''.5)
*Touv Calendar: 1408 TC (''[[The Scarlet Brotherhood|tSB.]]''64)

===576 CY===
*Baklunish Hegira: 3235 BH (''[[World of Greyhawk Fantasy Game Setting|Folio]]''.5)
*Flan Tracking: 2726 FT (''[[World of Greyhawk Fantasy Game Setting|Folio]]''.5)
*Olven Calendar: 5038 OC (''[[World of Greyhawk Fantasy Game Setting|Folio]]''.5)
*Olman Lunar: 1380 OL
*Oeridian Record: 1220 OR (''[[World of Greyhawk Fantasy Game Setting|Folio]]''.5)
*Suloise Dating: 6091 SD (''[[World of Greyhawk Fantasy Game Setting|Folio]]''.5)
*Touv Calendar: 1983 TC

===591 CY===
*Baklunish Hegira: 3250 BH (''[[Living Greyhawk Gazetteer|LGG]]''.13)
*Flan Tracking: 2741 FT (''[[Living Greyhawk Gazetteer|LGG]]''.13)
*Olven Calendar: 5053 OC (''[[Living Greyhawk Gazetteer|LGG]]''.13)
*Olman Lunar: 1395 OL (''[[The Scarlet Brotherhood|tSB.]]''64)
*Oeridian Record: 1235 OR (''[[Living Greyhawk Gazetteer|LGG]]''.13)
*Suloise Dating: 6106 SD (''[[Living Greyhawk Gazetteer|LGG]]''.13)
*Touv Calendar: 1998 TC 

==Conversions==
For results of 0 or less, subtract 1 from the result. In rare cases where the initial date is negative, convert to an older reckoning first. If this is not possible (such as with a negative SD date), then subtract 2 from the result (''ie'', once for each lack of a zero year).

===Baklunish Hegira===
BH date - 2659 = CY date.

: ''3250 BH - 2659 = [[591 CY]]''
: ''2238 BH - 2659 = -421 - 1 = -[[422 CY]]''

===Flan Tracking===
FT date - 2150 = CY date.

===Olven Calendar===
OC date - 4462 = CY date.

===Olman Lunar===
OL date - 804 = CY date.

===Oeridian Record===
OR date - 644 = CY date.

===Suloise Dating===
SD date - 5515 = CY date.

: ''6106 SD - 5515 = 591 CY
: ''5094 SD - 5515 = -421 - 1 = -422 CY''
: ''-500 SD - 5515 = -6015 - 2 = -6017 CY''

===Touv Calendar===
TC date - 1407 = CY date.

===Date determination within the Common Year reckoning===
To determine the date for a specific number of years spanning both BCY (Before Common Year) and CY, it is essential to account for the lack of a zero year. This is done in a similar manner to converting dates from another reckoning.

*For ''x'' years '''before''' a CY date, '''subtract''' 1 if the result is 0 or lower.

: ''591 CY - 591 = 0 - 1 = -1 CY
: ''591 CY - 600 = -9 - 1 = -10 CY

*For ''x'' years '''after''' a BCY (Before Common Year) date, '''add''' 1 if the result is 0 or higher.

: ''-422 CY + 422 = 0 + 1 = 1 CY''
: ''-422 CY + 500 = 78 + 1 = 79 CY''

==See also==
*[[World of Greyhawk Timeline]]

==Bibliography==
*[[Anne Brown|Brown, Anne]]. ''[[Player's Guide]]''. Renton, WA: TSR, 1998.

**[[Gygax, Gary]]. ''[[The World of Greyhawk]]''. Lake Geneva, WI: TSR, 1980.
*-----. ''[[World of Greyhawk Fantasy Game Setting]]''. Lake Geneva, WI: TSR, 1983.

*[[Holian, Gary]], [[Erik Mona]], [[Sean K. Reynolds]], and [[Frederick Weining]]. ''[[Living Greyhawk Gazetteer]]''. Renton, WA: Wizards of the Coast, 2000.

*[[Frank Mentzer|Mentzer, Frank]]. ''[[Doc's Island]]''. Lake Geneva, WI: TSR Hobbies, 1983. 

*[[Moore, Roger E]]. ''[[Greyhawk: The Adventure Begins]]''. Renton, WA: Wizards of the Coast, 1998. Page 39.

*[[Sean K. Reynolds|Reynolds, Sean K]]. ''[[The Scarlet Brotherhood]]''. Renton, WA: TSR, 1999. 

*[[Sargent, Carl]]. ''[[From the Ashes]]''. Lake Geneva, WI: TSR, 1993.

==External link==
*[http://en.wikipedia.org/wiki/Common_Year_(Greyhawk) Common Year on Wikipedia].


[[Category:Calendar eras]]