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23 BC in other calendars
Gregorian calendar	23 BC; XXII BC
Ab urbe condita	731
Ancient Greek era	189th Olympiad, year 2
Assyrian calendar	4728
Balinese saka calendar	N/A
Bengali calendar	−615
Berber calendar	928
Buddhist calendar	522
Burmese calendar	−660
Byzantine calendar	5486–5487
Chinese calendar	丁酉年 (Fire Rooster); 2674 or 2614; — to —; 戊戌年 (Earth Dog); 2675 or 2615
Coptic calendar	−306 – −305
Discordian calendar	1144
Ethiopian calendar	−30 – −29
Hebrew calendar	3738–3739
Hindu calendars
- Vikram Samvat	34–35
- Shaka Samvat	N/A
- Kali Yuga	3078–3079
Holocene calendar	9978
Iranian calendar	644 BP – 643 BP
Islamic calendar	664 BH – 663 BH
Javanese calendar	N/A
Julian calendar	23 BC; XXII BC
Korean calendar	2311
Minguo calendar	1934 before ROC; 民前1934年
Nanakshahi calendar	−1490
Seleucid era	289/290 AG
Thai solar calendar	520–521
Tibetan calendar	阴火鸡年; (female Fire-Rooster); 104 or −277 or −1049; — to —; 阳土狗年; (male Earth-Dog); 105 or −276 or −1048

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

Year 23 BC was either a common year starting on Saturday or Sunday or a leap year starting on Friday, Saturday or Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Augustus and Varro.

Events

Caesar Augustus becomes Roman Consul for the eleventh time. His partner is Aulus Terentius Varro Murena.
Augustus becomes very ill. He gives Agrippa his signet ring.
The Nubians, led by queen Candace Amanirenas, attack the Roman province of Egypt
Herod the Great builds a palace in Jerusalem
The as coin was struck in reddish pure copper, instead of bronze
Ma'nu III Saphul becomes ruler of Osroene
The Roman writer, architect and engineer Vitruvius finishes writing De Architectura. It is perhaps the first book on architecture.
Roman poet Horace publishes the first three books of Odes

for more information, see Category:23 BC births.