The Imperial Dating System was formed when King George Aron established the Human Imperium. It uses the seasons of Imperial City to denote the beginning and ending of years, and the city's days as standard days.
Many people use the Imperial Dating System. It is commonly used by the smallest relevant denomination, followed by its next largest, separated by slashes for dates and points for times.For example:
- 01/01/10000 would be the first day of the first month of the ten-thousandth year
- 001.001.01 would be the first second of the first minute of the first hour of the day.
It is often customary to drop the current age, since this is implicit to the year.
The Imperial Dating System relies on the daily time of Imperial City. Each day is split into 10 hours each consisting of 100 minutes. Each minute consists of 100 seconds. The beginning of the hour 5 represents the point when the sun is highest in the sky. The system is robust as Imperial City receives little to no fluctuations in its seasonal timing.
The Imperial Dating System designates each year as 1000 Imperial days, with 10 months. Every 2 months represent each of Imperial City's 5 seasons. Each year is designated a number followed by the suffix IC, meaning Imperial City Time. Each month is designated by its number as with days. However, when it comes to the seasons, their names are based upon the role of that season:
- Sow (the first season where plant seeds are planted)
- Growth (the second season where plants grow)
- Trim (the third season where the crops are maintained the most of the year. It is also the hottest season)
- Harvest (the fourth season where the crops are harvested)
- Toil (the fifth season where the soil is regenerated. It is also the coldest season)
Every 1000 years is designated an age and given a specific name based upon the accomplishments of the Imperium during those years and as such they often represent the industrial achievements of the Imperium. Below are the ages the Imperium recognises:
- Age of Terror (before the Imperial Dating System)
- Age of Bronze (1 IC to 1000 IC)
- Age of Iron (1001 IC to 2000 IC)
- Age of Steel (2001 IC to 3000 IC)
- Age of Steam (3001 IC to 4000 IC)
- Age of Light (4001 IC to 5000 IC)
- Age of Flight (5001 IC to 6000 IC)
- Age of Refining (6001 IC to 7000 IC)
- Age of Advance (7001 IC to 8000 IC)
- Age of Union (8001 IC to 9000 IC)
- Age of Reiteration (9001 IC to 10000 IC)
- Age of Progress (10001 IC to current)