The designation ‘BC’ stands for ‘Before Christ,’ which is used to label years before the estimated birth of Jesus Christ. The BC era is counted backwards, starting from 1 BC, which is followed by the year 1 AD (Anno Domini, Latin for ‘in the year of our Lord’). Therefore, BC ends with the year 1 BC.
To further clarify, there is no year ‘0’ in this dating system; the transition goes directly from 1 BC to 1 AD. This peculiar aspect of the calendar system can sometimes cause confusion when discussing time periods. Hence, while BC counts down to 1, it seamlessly transitions into AD, marking the end of the BC timeline.