ok, if the roman emporer constantine made the christian religion legal in 314ad, what year was it considered the year prior when time itself was not structures around jesus?

I'm not certain what you mean? I'm confused? Help?

525 A.D., if you believe posts at http://www.answerbag.com/q_view/678475

Something about a monk and how years were marked by the reign of the emporer before then.

.......it was considered to be BC (BEFORE CHRIST).

umm no..bc would have been 314 years before, not 1 year before 314ad

That's an interesting question. I never really thought about that. You're perfectly correct. The Christian based calendar could not have possibly started at year 1. It has to have started at least no earlier than 314 AD.

Actually I think historically it was much later than that. That's interesting.

In other words, you're asking what year was it that they changed the calendar system? They must have been counting years using some other reference point prior to that.

That's an interesting question. I'm sure historians have the correct answer to that. In fact, you might just check with Arabic calendars. I think Islamic countries still use a different calendar system even today, but clearly for commercial reasons they would also need to be aware of the Christian-based calendar.

I think most of the world uses (or at least converts to) the western calendar system if for only commercial convenience because the richest countries in the world use that system.