23

Millennium:	1st millennium
Centuries:	1st century BC – 1st century – 2nd century
Decades:	0s BC  0s  10s  – 20s –  30s  40s  50s
Years:	20 21 22 – 23 – 24 25 26

23 by topic

Politics

State leaders – Sovereign states

Birth and death categories

Births – Deaths

Establishment and disestablishment categories

Establishments – Disestablishments

23 in other calendars

Gregorian calendar	23 XXIII
Ab urbe condita	776
Assyrian calendar	4773
Bengali calendar	−570
Berber calendar	973
Buddhist calendar	567
Burmese calendar	−615
Byzantine calendar	5531–5532
Chinese calendar	壬午年 (Water Horse) 2719 or 2659     — to — 癸未年 (Water Goat) 2720 or 2660
Coptic calendar	−261 – −260
Discordian calendar	1189
Ethiopian calendar	15–16
Hebrew calendar	3783–3784
Hindu calendars
- Vikram Samvat	79–80
- Shaka Samvat	N/A
- Kali Yuga	3124–3125
Holocene calendar	10023
Iranian calendar	599 BP – 598 BP
Islamic calendar	617 BH – 616 BH
Julian calendar	23 XXIII
Korean calendar	2356
Minguo calendar	1889 before ROC 民前1889年
Seleucid era	334/335 AG
Thai solar calendar	565–566

Year 23 (XXIII) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Pollio and Vetus (or, less frequently, year 776 Ab urbe condita). The denomination 23 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Events

By place

Roman Empire

• Greek geographer Strabo publishes Geography, a work covering the world known to the Romans and Greeks at the time of Emperor Augustus – it is the only such book to survive from the ancient world.^[1]
• Emperor Tiberius' son Julius Caesar Drusus dies.^[2] From that point forward, he seems to lose interest in the Empire and occupies himself with the pursuit of pleasure.
• Lucius Aelius Sejanus begins to dominate the Roman Senate and Tiberius, after the death of Drusus.^[3]
• Gaius Asinius Pollio and Gaius Antistius Vetus become consuls.^[4]

Asia

• Liu Xuan, a descendant of the Han Dynasty royal family and leader of insurgents against the Xin Dynasty, proclaims himself emperor against Wang Mang.^[5]
• July – After being under siege for two months, about 19,000 insurgents under Liu Xiu defeat 450,000 of Wang Mang's troops in the Battle of Kunyang, ushering in the fall of Wang Mang and restoration of the Han Dynasty in China.^[6]

Births

• Pliny the Elder, Roman scientist and writer^[7] (d. 79 AD)

Deaths

• September 14 – Drusus Julius Caesar, son of the Emperor Tiberius, poisoned^[8] (b. 13 BC)
• October 6 – Wang Mang, "usurper" of the throne of the Han Dynasty and Emperor of the Xin Dynasty (b. 45 BC)^[9]
• Liu Xin, Chinese astronomer^[10] (b. c. 50 BC)
• Liu Yan, Chinese general
• Empress Wang (b. 8 BC)
• Juba II, King of Mauretania^[11] (b. c. 50 BC)

References

1. Roller, Duane W. (1998). The building program of Herod the Great. University of California Press. p. 65. ISBN 978-0-520-20934-3.
2. Bunson, Matthew (2002). Encyclopedia of the Roman empire (2nd ed.). Infobase Publishing. pp. 187–188. ISBN 978-0-8160-4562-4.
3. Adkins, Lesley; Adkins, Roy A. (2004). Handbook to life in ancient Rome (2nd ed.). Infobase Publishing. p. 23. ISBN 978-0-8160-5026-0.
4. Sherk, Robert Kenneth (1988). The Roman Empire: Augustus to Hadrian. Cambridge University Press. p. 73. ISBN 978-0-521-33887-5.
5. Giele, Enno (2006). Imperial decision-making and communication in early China: a study of Cai Yong's Duduan. Otto Harrassowitz Verlag. p. 218. ISBN 978-3-447-05334-1.
6. Schram, Stuart R. (1992). Mao's road to power: revolutionary writings 1912–1949 1. M.E. Sharpe. p. 366. ISBN 978-1-56324-457-5.
7. Healy, John F. (1999). Pliny the Elder on science and technology. Oxford University Press. p. 1. ISBN 978-0-19-814687-2.
8. Bowman, Alan K.; Champlin, Edward; Lintott, Andrew (1996). The Augustan Empire, 43 B.C.–A.D. 69 (2nd ed.). Cambridge University Press. p. 213. ISBN 978-0-521-26430-3.
9. Clark, Anthony E. (2008). Ban Gu's history of early China. Cambria Press. p. 110. ISBN 978-1-60497-561-1.
10. Yunis, Harvey (2003). Written texts and the rise of literate culture in ancient Greece. Cambridge University Press. p. 125. ISBN 978-0-521-80930-6.
11. Rocca, Samuel (2008). Herod's Judaea: a Mediterranean state in the classical world. Mohr Siebeck. p. 58. ISBN 978-3-16-149717-9.