The year of Jesus’ supposed birth was counted as year 1 AD/CE. The year before that is considered year 1 BC/BCE. It’s worth noting that the concept of zero didn’t yet exist back then. https://en.wikipedia.org/wiki/0#History
Probably worth noting that the Gregorian Calendar was an invention of the 16th Century. It was invented to deal with the problems of the Julian Calendar and the creators would have had a firm understanding of the concept of zero. The AD/BC split was all about the assumed year of the birth of Jesus of Nazareth (according to Christian mythology). The year of his birth was set as the first year Anno Domini or “The year of the Lord”. Or the first year where Jesus was kicking about. The year prior to that would therefore be the first year before “Before Christ” was alive, and therefore the year 1 BC.
Especially weird considering that Christmas has been set to December for a long time, so 98% of year 1 AD was actually before the ostensible birth of Christ (I know that scholars now think he was born in April or something, but they probably didn’t always)
Ultimately, they had to set the calendar’s dates based on something. Given the vast hold on Europe which Christianity had at the time, it’s not surprising that the starting date was based on such an important event in the mythology. However, trying to deviate too far from the currently understood order (the Julian Calendar) was likely to end in failure. So, they could either fight the tide of history or just accept a logical oddity. Given all the other logical oddities one must accept for supernatural belief, who’s going to complain about having a holy reason to eat, drink and be merry during one of the most terrible parts of the year?
https://en.wikipedia.org/wiki/Year_zero
The year of Jesus’ supposed birth was counted as year 1 AD/CE. The year before that is considered year 1 BC/BCE. It’s worth noting that the concept of zero didn’t yet exist back then. https://en.wikipedia.org/wiki/0#History
Probably worth noting that the Gregorian Calendar was an invention of the 16th Century. It was invented to deal with the problems of the Julian Calendar and the creators would have had a firm understanding of the concept of zero. The AD/BC split was all about the assumed year of the birth of Jesus of Nazareth (according to Christian mythology). The year of his birth was set as the first year Anno Domini or “The year of the Lord”. Or the first year where Jesus was kicking about. The year prior to that would therefore be the first year before “Before Christ” was alive, and therefore the year 1 BC.
Especially weird considering that Christmas has been set to December for a long time, so 98% of year 1 AD was actually before the ostensible birth of Christ (I know that scholars now think he was born in April or something, but they probably didn’t always)
Ultimately, they had to set the calendar’s dates based on something. Given the vast hold on Europe which Christianity had at the time, it’s not surprising that the starting date was based on such an important event in the mythology. However, trying to deviate too far from the currently understood order (the Julian Calendar) was likely to end in failure. So, they could either fight the tide of history or just accept a logical oddity. Given all the other logical oddities one must accept for supernatural belief, who’s going to complain about having a holy reason to eat, drink and be merry during one of the most terrible parts of the year?