Calendar

"Time, and the concept of timekeeping, was first brought into existence by the early Sigmas."
―ChidambaramCalendars are systems for organising and keeping time. There are two commonly adopted calendars, the Sigma calendar and the Pythagorean calendar.
==History==
===Sigma Calendar===
The Sigma Calendar, also known as the Interrealm or Universal Calendar, was created by the Ancients of the Sigma Spiritual as the first ever form of timekeeping. It is now recognised and utilised throughout most realms and realm sectors, including the home world of the Sigma Spiritual, Sigma Shire.
A common year in the Sigma Calendar constitutes 420 days of 24 hours each, with no leap years. Each year is divided into twelve equal months, as follows:
Month 	Duration
Primis 	35 days
Secundo 	35 days
Tertius 	35 days
Quartus 	35 days
Quintus 	35 days
Sextus 	35 days
Septima 	35 days
Octavo 	35 days
Nonus 	35 days
Decimatio 	35 days
Undecimus 	35 days
Duodecimus	35 days
An Aeon in the Sigma Calendar spans 242 years, or a complete Aether cycle of Sigma Shire, and is used as a unit of time. The date is usually represented in the following format: 
 <day>/<month>/<year>-<Aeon number>Ae
So the fifth day of the tenth month of the tenth thousandth year would be
 05/10/78-42Ae
=== Pythagorean calendar ===
The Pythagorean calendar was created by Archwarlock Chandru Mirpuri as an independent means of timekeeping for Pythagoras. The year 1 on the Pythagorean calendar begins on 1/1/1-314Ae of the Sigma calendar, or the first day of the 314th Aeon. The Pythagorean calendar is used only within the Dean realm sector, and is the primary calendar in the states of Pythagoras and Eden.
A Pythagorean year, or the orbital period of Pythagoras around its parent star, is 365 days of 24 hours each, with 97 leap years in the span of 400 years, or an average of one leap year every four years. Each year is divided into twelve months, as follows:
Month 	Duration
January 	31 days
February 	28 days(29 on leap year)
March 	31 days
April 	30 days
May 	31 days
June 	30 days
July 	31 days
August 	31 days
September	30 days
October 	31 days
November 	30 days
December 	31 days
The date is usually represented in the following format:
 <day>/<month>/<year>
So the fifth day of the tenth month of the tenth thousandth year would be
 05/10/10000
Category:Lore