What does 2000 bc mean

There is no "zero" year -- in this system, the year Christ was born is 1 A. This practice was first suggested in the sixth century A. It took quite a while for it to become a worldwide standard, however. Russia and Turkey, for example, did not convert to the modern calendar and year scheme until the 20th century.

One interesting side note: Because of a variety of changes and adjustments made to the calendar during the middle ages, it turns out that Jesus was most likely born in what we now think of as 6 B. Besides B.

If you have a math problem that requires you to calculate years across B. For example, if you need to work out how many years are between January 1, B. However, you still have to adjust for the absence of year 0. You do this by removing 1 from your answer, so minus 1 is The calculation is a little more complicated when you are calculating partial years across B.

First, change the month of the year into decimal form. If 12 months is 1, then nine months is 0. Say you need to work out what calendar year was years before October A. The simplest method is to take the starting calendar year and figure out how much time has lapsed since January 1, A.

Still, many people feel that B. And, while most countries use the Gregorian calendar as their civil calendar, many still recognize other religious and cultural calendars as well.

For instance, the Hebrew calendar, developed in C. It starts in the year C. The Islamic calendar uses the abbreviation A. Because the Islamic calendar is shorter than the Gregorian calendar, the two will one day be in the same year—in C. Have you ever celebrated the Chinese New Year?

The Chinese calendar is lunisolar and goes back to the 14th Century B. This calendar also measures time in year cycles. The year is the year on the Chinese calendar. The Persian calendar is widely used in Afghanistan and Iran. The ancient Hindu calendar has changed to become several regional Indian calendars today. Cultural events in these countries often follow the Persian and Indian calendars.

Of course, many other calendars have fallen almost completely out of use. The Maya calendar is one of the most well-known, but the Roman calendar was also once widely used. And, during the French Revolution, people in France created a calendar that started over with the first year of their revolt. Do you mark years with B. Do you use B. And of course, the more calendars you learn about, the more holidays you will know about, too! Hi Serena, if you read the Wonder you can clearly see that we didn't say A.

Instead, we stated what it does stand for. Thanks for stopping by! We are undergoing some spring clearing site maintenance and need to temporarily disable the commenting feature. Thanks for your patience. It was on one such table that, in A. Dionysius devised his system to replace the Diocletian system, named after the 51st emperor of Rome, who ruled from A. Dionysius never said how he determined the date of Jesus' birth, but some authors theorize that he used current beliefs about cosmology, planetary conjunctions and the precession of equinoxes to calculate the date.

Dionysius attempted to set A.