A.R

A.R refers to "After Revelation". The "Revelation" refers to the Modern Revelation. The number before A.R refers to years since the Revelation. For instance, 602 A.R, the year in which the characters begin their campaign, is 602 after the revelation.

Referring to the world before the Modern Revelation is P.R, for "Pre-Revelation" and counts backwards. Therefore, 1 P.R refers to the year before the revelation, whereas 487 P.R refers to 487 years before the revelation. When referring to 0 A.R/P.R, people generally say "The Year of the Revelation".

Timeline of Daegyn
The Iron Age- 10,000 P.R and previous

The Dark Age- 1,000 P.R

The Modern Revelation- Year of Revelation

Golden Age- 0 A.R to 551 A.R

The Fall Of Technology- 551 A.R

Years of Panic- 551 A.R to 560

The Flesh Age- 560 A.R and beyond

Start of Campaign- 602 A.R