AD and BC are abbreviations used in dating systems to designate periods of time in history.
AD stands for Anno Domini, a Latin phrase meaning "in the year of our Lord." It is used to label years after the estimated birth year of Jesus Christ. For example, AD 2023 refers to the year 2023 in the Gregorian calendar.
BC stands for Before Christ, and it refers to years before the estimated birth of Jesus Christ. Since the AD/BC dating system was first devised centuries after the events it refers to, it's worth noting that there is no year zero between BC and AD. The year immediately preceding AD 1 is referred to as 1 BC.
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AD stands for Anno Domini, a Latin phrase meaning "in the year of our Lord." It is used to label years after the estimated birth year of Jesus Christ. For example, AD 2023 refers to the year 2023 in the Gregorian calendar.
BC stands for Before Christ, and it refers to years before the estimated birth of Jesus Christ. Since the AD/BC dating system was first devised centuries after the events it refers to, it's worth noting that there is no year zero between BC and AD. The year immediately preceding AD 1 is referred to as 1 BC.
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