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.
Characters and organizations in Year Zero
The Solutions Backwards Initiative is a group of students, professors, and IT specialists who devise a method of, and succeed in, sending information back through time. The information sent back is theorized to be the websites that are connected to "Year Zero". However, the data they send back through time gets somewhat corrupted, causing the garbled appearance of all of the sites in the "Year Zero" universe.