+**Before Christ** (BC) is a designation for the years preceding the traditional [Anno Domini](/wiki/anno_domini) (AD) system, marking time before the supposed birth of Jesus. This chronological system is a fundamental component of the [Gregorian calendar](/wiki/gregorian_calendar) widely adopted for historical and contemporary dating.
+## See also
+- [Anno Domini](/wiki/anno_domini)
+- [Common Era](/wiki/common_era)
+- [Dating System](/wiki/dating_system)
... 1 more lines