In the Gregorian calendar, the year that followed 1 BC is 1 AD. This transition from BC (Before Christ) to AD (Anno Domini) marks the start of the Common Era and is significant in the study of history and chronology. The shift from 1 BC to 1 AD is not a seamless one, as there is no year 0 in the Gregorian calendar. This means that the year immediately following 1 BC is 1 AD, with no intervening year zero. This can lead to some confusion when calculating dates and timelines, but it is important to understand this convention when studying historical events. The transition from BC to AD is based on the traditional birth year of Jesus Christ, with 1 AD representing the year of his birth (although modern scholarship suggests that Jesus was likely born a few years earlier). The AD system was introduced by the sixth-century monk Dionysius Exiguus and has been widely adopted as the standard method of dating in the Western world. Understanding the transition from 1 BC to 1 AD is essential for correctly interpreting historical documents and timelines. It is also important for accurately dating events and understanding the context in which they occurred. For more information on the transition from 1 BC to 1 AD, you can visit the following websites: - [History.com](https://www.history.com/news/why-is-the-year-2021-ad) - [Britannica.com](https://www.britannica.com/science/Anno-Domini) These resources provide detailed explanations of the BC/AD dating system and its significance in the study of history. By delving deeper into this topic, you can gain a better understanding of how dates are calculated and how historical events are organized in the Gregorian calendar. In conclusion, the year that followed 1 BC is 1 AD, marking the transition from Before Christ to Anno Domini. This shift is important for understanding historical timelines and accurately dating events. By exploring this topic further, you can enhance your knowledge of chronology and historical dating systems.

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