Birth of Jesus, as assigned by Dionysius Exiguus in his anno Domini era according to at least one scholar. However, most scholars think Dionysius placed the birth of Jesus in the previous year, 1 BC. Furthermore, most modern scholars do not consider Dionysius' calculations authoritative, placing the event several years earlier (see Chronology of Jesus).
Juba II of Mauretania joins Gaius Caesar in Armenia as a military advisor. It is during this period that he meets Glaphyra, a Cappadocian princess and the former wife of Alexandros of Judea, a brother of Herod Archelaus, ethnarch of Judea, and becomes enamoured of her.
Wang Mang begins a program of personal aggrandizement, restoring marquess titles to past imperial princes and introducing a pension system for retired officials. Restrictions are placed on the Emperor's mother, Consort Wei and members of the Wei Clan.
The first census is concluded in China after having begun the year before: final numbers show a population of nearly 60 million (59,594,978 people in slightly more than 12 million households). The census is one of the most accurate surveys in Chinese history.
The Chinese census shows nearly one million people living in Vietnam.
Emperor Caesar Augustus summons Tiberius to Rome, and names him his heir and future emperor. At the same time, Agrippa Postumus, the last son of Marcus Vipsanius Agrippa, is also adopted and named as Augustus' heir.
A pact of non-aggression and friendship is signed between the Roman Empire, represented by Tiberius, and the German tribe the Cherusci, represented by their King Segimer. Arminius and Flavus, sons of Segimer, are brought into the Roman army as leaders of the auxiliary troops.
Quirinius conducts a census in Judea (according to Josephus), which results in a revolt in the province, led by Judas of Galilee, and supported by the Pharisee Zadok. The revolt is repressed, and the rebels are crucified, but it results in the birth of the Zealot movement, the members of which regard the God of Judaism as their only master.
Due to a food shortage in Rome, Augustus doubles the grain rations distributed to the people.
Due to a catastrophic fire in Rome, the barracks system is created to allow quicker response in the case of emergencies.
Candidates for government office must take civil-service examinations.
The imperial Liu clan suspect the intentions of Wang Mang and foment agrarian rebellions during the course of Ruzi Ying's reign. The first of these is led by Liu Chong, Marquess of Ang-Zong (a/k/a Marquis of An-chung), with a small force starting in May or June.
Publius Quinctilius Varus is appointed governor of Germania, charged with organizing Germania between the Rhine and Elbe rivers. He carries out a census, devises tributes and recruits soldiers, all of which create dissension among the Germanic tribes.
Zhai Yi, Governor of the Commandery of Dong (modern Puyang, Henan) declares Liu Zin, Marquess of Yang Xiang (modern Tai'an, Shandong), emperor. This proves to be the largest of the rebellions against Emperor Ruzi of Han.
Wang Mang puts down the rebellion during the winter. The Zhai is captured and executed while Liu Xin escapes.
In China, Wang Mang crushes a rebellion by Chai I, and on the winter solstice (which has been dated January 10 of the following year) officially assumes the title emperor, establishing the short-lived Xin dynasty.
After completing Metamorphoses, Ovid begins the Fasti (Festivals), 6 books that detail the first 6 months of the year and provide valuable insights into the Roman Calendar.
In order to increase the number of marriages, and ultimately the population, the Lex Papia Poppaea is adopted in Italy. This law prohibits celibacy and childless relationships.
Roman finances become strained following the Danubian insurrection and the Battle of the Teutoburg Forest, resulting in the levying of two new taxes: five percent of inheritances, and one percent on sales.