The Vultro Calendar is a calendar system established solely in the Vultroverse, meant to clear any ambiguity due to the dates in the Archie comics universe being unclear. Based on the real-world Gregorian calendar, it asserts that 0 BBV is the year of the birth of Vultro the Fox. Any events that occurred between January 1st and July 26th of that year are still considered 0 BBV despite being before Vultro's birth. For instance, someone born 2 years after Vultro would have a birthdate of 2 ABV, regardless of if their birthday is January 1st or December 31st.
In relation to other major events in the Sonic series, the events of Sonic the Hedgehog take place in 8 ABV. This anchor point is used to estimate character ages in relation to other major canon events.
The Vultro calendar also makes a clear assertion about when 0 ABV takes place in relation to other common calendars: 3219 on the original continuity calendar, and 13999 CE on the Gregorian calendar. Its relation to the calendar of the current comics continuity is unknown.
The current year according to the Vultro Calendar is 28 ABV.