Calendar dating

15 Feb

The Primarch was determined to make a full and accurate accounting of the Imperium's fragmentary and often contradictory history, and so he commissioned the formation of a new organsation -- the Logos Historica Verita.

It was charged with the daunting task of discovering, collating and cataloging thousands of standard years of human history that had been lost or was woefully inaccurate due to superstition, suppression or purposeful obfuscation by the High Lords of Terra.

Much of Terra's ancient history, painstakingly pieced together by the Remembrancers of Guilliman's own time, had been lost again.

Throughout history there have been numerous attempts to convey time in relation to the sun and moon.

Even now the Chinese and Islamic calendars are based on the motion of the moon around the earth, rather than the motion of the earth in relation to the sun, and the Jewish calendar links years to the cycle of the sun and months to the cycle of the moon. C., Julius Caesar ordered a calendar consisting of twelve months based on a solar year.

The Egyptian civil calendar was introduced later, presumably for more-precise administrative and accounting purposes.

It consisted of 365 days organized into 12 months of 30 days each, with an additional five epagomenal days (days occurring outside the ordinary temporal construct) grouped at the end of the year.