23 BC
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| Millennium |
| 1st millennium BC |
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| 23 BC by topic |
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| Arts, history, and science |
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| Countries |
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| Lists of leaders |
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| Establishments and disestablishments categories |
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| 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 | མེ་མོ་བྱ་ལོ་ (female Fire-Bird) 104 or −277 or −1049 — to — ས་ཕོ་ཁྱི་ལོ་ (male Earth-Dog) 105 or −276 or −1048 |
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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
Births
- for more information, see Category:23 BC births.