AD 23

AD 23 (XXIII) was a common year starting on Friday 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 AD 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.

AD 23 in various calendars

Gregorian calendar	AD 23 XXIII
Ab urbe condita	776
Assyrian calendar	4773
Balinese saka calendar	N/A
Bengali calendar	−571 – −570
Berber calendar	973
Buddhist calendar	567
Burmese calendar	−615
Byzantine calendar	5531–5532
Chinese calendar	壬午年 (Water Horse) 2720 or 2513     — to — 癸未年 (Water Goat) 2721 or 2514
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	3123–3124
Holocene calendar	10023
Iranian calendar	599 BP – 598 BP
Islamic calendar	617 BH – 616 BH
Javanese calendar	N/A
Julian calendar	AD 23 XXIII
Korean calendar	2356
Minguo calendar	1889 before ROC 民前1889年
Nanakshahi calendar	−1445
Seleucid era	334/335 AG
Thai solar calendar	565–566
Tibetan calendar	阳水马年 (male Water-Horse) 149 or −232 or −1004     — to — 阴水羊年 (female Water-Goat) 150 or −231 or −1003

Portrait of King Juba II (48 BC–AD 23)

Events

By place

Roman Empire

• Greek geographer Strabo publishes Geographica, 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 Drusus Julius Caesar dies.^[2] From that point forward, Tiberius 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]

China

• Liu Xuan, a descendant of the Han dynasty royal family and leader of insurgents against the Xin dynasty, proclaims himself emperor against Wang Mang.^[4]
• 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's Xin dynasty and restoration of the Han dynasty.^[5]
• October 6 – Emperor Liu Xuan's forces kill Wang Mang at the end of a three-day siege.

Births

• Pliny the Elder, Roman scientist and writer^[6] (d. 79 AD)

Deaths

• September 14 – Drusus Julius Caesar, son of Emperor Tiberius^[7] (b. 14 BC)
• October 6 – Wang Mang, Chinese emperor of the Xin dynasty (b. c. 45 BC)^[8]
• Juba II, king of Mauretania^[9] (b. c. 50 BC)
• Liu Xin, Chinese astronomer, mathematician and politician^[10] (b. c. 50 BC)
• Liu Yan, Chinese general and politician
• Servius Cornelius Lentulus Maluginensis, Roman statesman
• Wang, Chinese empress of the Xin dynasty (b. 8 BC)