What is Year zero?
A '''year zero''' does not exist in the [[Anno Domini]] (AD) system usually used to number years in the [[Gregorian calendar]] and [[Julian calendar]]. In this system, the year [[1 BC]] is followed by [[AD 1]]. However, there is a year zero in [[astronomical year numbering]] (where it coincides with the Julian year 1 BC) and in [[ISO 8601|ISO 8601:2004]] (where it coincides with the Gregorian year 1 BC) as well as in all [[Buddhist calendar|Buddhist]] and [[Hindu calendar]]s. {{Chronology}} {{stub}} [[Category:Years]]