Year zero
Year zero does not exist in the anno Domini system usually used to number years in the Gregorian calendar and in its predecessor, the Julian calendar. In this system, the year is followed by . However, there is a year zero in astronomical year numbering (where it coincides with the Julian year ) and in ISO 8601:2004 (where it coincides with the Gregorian year ) as well as in all Buddhist and Hindu calendars.
Red Eyes
The year 2001 became the new first year of the new era, known as 1 GU (first year of the Great Unification's calendar), however in 50 GU (2050 AD) an unknown power is able to hack in the SDI system, forcing the system in SafeMode, making the system unable to process order from the DUPE command centre (except its original mission to intercept any launched ICBMs and missiles). As result of losing its deterrence system, the other countries of the planet launch a full-scale attack against the DUPE forces, beginning the "20 years war" (World War III) that ended de facto in 70 GU (2070 AD) with no winner and the death of half the population of the planet, while all main actors of the war eventually dissolved and ceased to exist following the mutual destruction.