Hey Trey, well unfortunately a quick "wiki" search as you put it can give certain information, but the important thing to know is that the Juian calender was not a religious calendar, and the small section of the church that did not want to change to a gregorian calendar was only due to them being use to using it for so long.
That is neither here nor there, the fact of the matter is gregoarian or julian are attempts to divide time in to measurable and predictable pieces. The greagorian did this better. However, when approaching time for the bible and the end of the time, we have much better ways of looking at things. The key to doing this is understanding the ceremonial feasts and festivals of the old testament. These are events that regardless of calendar systems can be tracked and understood so we know a timetable.
To answer your question the gregorian calendar and the hebrew calendar are both used with the feasts and festivals to determine the date.
I will give you an example.
The Biblical ceremonial calendar was governed by the elapsed time from one new moon to the next, which made the Biblical month either 29 or 30 days. By carefully analyzing the time information in the Bible, we learn that the first month of each year began as close to the spring vernal equinox as possible, but no earlier than 14 days before the spring equinox, which is March 21 or March 22.
The first day of the seventh month was a special feast day that theologians call the feast of trumpets. More properly, it should be called the feast of jubilee. (The trumpets that were sounded on that day were not the Biblical silver trumpets.) On that date, it was the “shophar,” the ram’s horn, that was blown. The Bible, when correctly translated, speaks of it as the day of jubilee (Numbers 29:1) or a memorial of the jubilee (Leviticus 23:24).
Every fiftieth year was a jubilee year, which emphasized that the Gospel (liberty) was to be proclaimed to the whole world. The jubilee years began in 1407 B.C. when Israel entered the land of Canaan and were to be observed at 50 year intervals thereafter (Leviticus 25:8-13). Thus, 7 B.C., the year Christ was born, was a jubilee year. And A.D. 1994, which came 2,000 years after 7 B.C., was also a jubilee year. (this 1994 date is important as we move forward in understanding May 21st 2011)
The tenth day of the seventh month was called the day of atonement. It, too, was called a day of jubilee (Leviticus 25:9), and it was looking toward the great event of Jesus providing atonement for the sins of all He came to save.
The next important juncture in God’s salvation program was the day Jesus officially began His work as the Messiah. It was the day He was announced to the world as the Lamb of God who had come to take away the sins of the world. According to our modern calendar, it was September 26, A.D. 29. According to the Biblical calendar, it is the first day of the seventh month, which is the date of the feast of jubilee. We can begin to see the similarities of the announcement of the official beginning of the ministry of Jesus, our jubilee, with a feast of jubilee.
If you study in the Old Testament what the Jubilee was all about it will make much more since why this event ties directly in and even helped predict what Jesus's purpose would be. In other words all roads lead to Jesus. All the ceremonies and feasts point to Jesus.
Later I will go over what happened in 1994 that was so significant.
I will stop here for now, I have a 10 am appointment. I also would like to know if this is even interesting to you? It is a lot of effort on my part, and I want to make sure I am making sense, to some degree. This is a lengthy topic and one that has taken years to fully understand, so please don't expect me to just say a few sentences and all will be enlightened.
Talk to you soon...
