The Julian calendar was introduced by Julius Caesar in 45 BC. It was in common use until the 1500s, when countries started changing to the Gregorian Calendar. However, some countries (for example, Greece and Russia) used it into this century, and the Orthodox church in Russia still uses it, as do some other Orthodox churches.
This does not mean that years were counted the way we do now. They were counted from the start of the reign of the Emperor or Caesar and reset to one when the next Emperor took over. For more information on how the years are counted see the page counting years. Historians sometimes counted years ab urbe condita, that is since the founding of Rome.
Julius Caesar
Gaius Julius Caesar was born in the year 100 BC into a patrian family who claimed decendancy from the kings of Alba Langa and through them, Aeneas of Troy whose mother wa...
The Gregorian Calendar
The calendar used throughout the world today is the Gregorian calendar. It is sometimes called a "Christian" calendar. The Gregorian calendar is the one commonly used tod...
