Question about the year labels of "B.C. and A.D.".?

Case B is closer, because there's no year zero. Part of what is confusing you is that you're assuming years have to start on January 1 - they don't. The count of years and the count of months can run independently of each other.

Before the AD system was developed by Dionysius Exiguus in the 6th century, people often tracked years by the reigns of kings. So you said, "In the seventh year of King So-and-So there was a great famine" or "In the thirteenth year of King So-and-So we fought a war with the evil hobnobbins." The year of the king's reign didn't begin January 1, it began on his coronation, the same as the years of your age begin on your birthday rather than January 1.

Dionysius applied this same sensibility to Christ's incarnation; Anno Domini, "years of the lord," are a count of years since Christ becomes incarnate. So as soon as he becomes incarnate, it's 1 AD, the First Year of the Lord. The minute before he becomes incarnate it's still 1 BC, the first year before Christ. The thorny question then is on what day does Christ's incarnation begin? Some medieval writers started the year on 12/25, Christmas, for his birth; but others began the year on March 25, the Feast of the Annunciation, on the understanding that that's when Mary became pregnant. It wasn't until the 16th century that the pope decided to sort out the confusion by declaring that years were to be counted from the old pagan Roman new year of January 1.

As far as the rest of your timeline goes; if the gospels are accurate, Jesus would have been born in 4 BC or earlier, because that's when Herod died who was king when he was born (Dionysius miscalculated the years). Luke tells us the Jesus was "about thirty" when he started his ministry, but it's not clear how precise that's meant to be. We don't know how long his ministry was before the Crucifixion; the Gospel of John has three distinct Passover episodes, which lead some people to say he had a three-year ministry, but John is probably not written in strict chronological order and the other gospels seems to describe a ministry of only a year or less. So that can get you a birth year in the range of 6-4 BC, his ministry beginning roughly 24-26 AD (give or take a year or two), and the crucifixion anywhere from about 25 to 30 AD.

Obviously not. The Hebrews have their own calendar headquartered on the lunar procedure. The reward system we've adopted was once the Julian calendar named after Julius Caesar- in other phrases, it used to be a Roman invention and everyone knows that Mithra-ism is ready sun-worship therefore it's founded on the solar system, not lunar. If we are to rely years on the Bible, we will get more accurate outcome via making use of the Jewish calendar. After all, God has revealed himself first to the Jewish folks. When you consider that the Jews would not respect Jesus Christ because the promised Messiah, they'll no longer be given the B.C.(earlier than Christ) and A.D.(Anno Domini) or year of the Lord terms.

Just to add to the others, if Christ's birth was when Herod the Great was alive, it would have to be at least 4 BC because Herod died then.

Dionysius Exiguus, who first plotted these dates, made a mistake in the 6th century AD. Exiguus means 'the small', but a possible translation is 'the careful' which is a bit of a hoot in the circumstances.

There is no year zero. Our time periods all begin with year 1.

So the first year of the 21st century was 2001. The year 2000 was the last year of the 20th century.

The year before 1 AD was 1 BC, no year 0.

As for Christ under this system, he was born at the end of 1 BC as 1 AD is the first full year after his birth.

You have it all wrong.

B.C stands for before Christ, and back then we used different calendars. The calendar we use today was invented 1000 years after Christ and by then the years 1 B.C. and 1 A.D. didn't matter, 0 didn't exist.

A.D. stands for Anno Domini which means 'In the year of our Lord' and was counted on the year Jesus was born.

Actually, AD does not mean "After Christ". It means "Annos Domini" which translates to " In the year of our lord".

great argument