1 BC

1 BC was the last and final year of the Before Christ system. Jesus Christ's incarnation was set at 1 BC. It was a common year starting on Friday, the 1000th and last year of the 1st millennium BC, the 100th and last year of the 1st century BC, and 10th and last year of the 0s BC decade. Although 1 BC is a Before Christ Year, it is the first year of the 1st millennium, the 1st year of the 1st century, and the first year of the 0s decade.