Luna online dating system
Various rival dating systems had evolved from the Imperial Standard, making a true chronicle of the galaxy almost impossible to construct.
As the Indomitus Crusade drew to a close around 111.
Guilliman finally resolved the problem after a long conference with his Historitors and the mysterious organisation of the Ordo Chronos.
He decreed that a single logic could no longer be applied to time and space within the Imperium.
It was something else that would ultimately require his personal attention to repair.
The problem faced by Guilliman was that after the opening of the Great Rift, near every active Imperial war zone had to devise and reinforce its own chronological system.
The Imperial Dating System of the Imperium of Man, also known as the Imperial Calendar, is fairly complex in nature, and has been structured so as to deal with the vast amount of recorded history that exists in the 41st Millenium and the massive distances between settled human worlds, which can lead to long periods of isolation.
Also the vagaries and time-warping effects of the Immaterium can make it almost impossible to keep accurate track of time over long journeys.
Therefore, each sub-section of the Imperium would have to look to its own chronology, and use the coming of the Great Rift in that sector as its overarching reference point.
Even had the Imperium of Man not been split in half, the sheer interstellar distances it covered prohibited any accurate reflection of time and space.
Despite the flexibility of the "check number" system of old outlined above, pioneered at the time of the Great Crusade, where the first digit of each timestamp indicated its veracity, it became easy for dates and times to lose all meaning between star systems.
This is the year within the millennium, running from 001-999. 2018 would be represented very generally in the Imperial Dating System as 018. As almost all records of the religions practiced by Mankind before the development of the Imperial Cult in the 31st Millennium have been lost, none know exactly why the Imperial Calendar counts the years in this manner or the true origin of the dating system.
For general dates, often only the year and millennium are included, such as 999. This is the millennium since the birth of the ancient human religious figure Jesus Christ in which the event took place. Not long after the Ultramarines Primarch Roboute Guilliman's resurrection in 999.
A typical date as Imperial scholars write it would look something like 0.123.456. This date can be divided up so that each part is explained separately below: 0 123 456 M41 = Check Number/Year Fraction/Year/Millennium Following the birth of the Great Rift, temporal anomalies spread across the galaxy making the use of a universal dating system extremely difficult as different Imperial worlds began to experience the passage of time at different subjective rates.