1. Events
     By place    Roman Empire    India  

2. Births

3. Deaths

4. References

Year 20 BC was either a common year starting on Wednesday or Thursday or a leap year starting on Tuesday, Wednesday or Thursday (link will display the full calendar) of the Julian calendar (the sources differ, see leap year error for further information) and a common year starting on Tuesday of the Proleptic Julian calendar. At the time, it was also known as the Year of the Consulship of Appuleius and Nerva (or, less frequently, year 734 Ab urbe condita). The denomination 20 BC 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

• 12 May – Peace treaty between Rome and Parthia, in which the captured eagles of Marcus Licinius Crassus and Mark Antony are returned.
• Based on the scenes and the style of the work, the Portland Vase is believed to have been made in Alexandria some time between this year and AD 100.
• King Herod the Great begins renovation of the Temple in Jerusalem.
• Maison Carrée, Nîmes, France, is built (approximate date).
• Marcus Verrius Flaccus' De verborum significatu is published. It is one of the first great dictionaries in history

India

• Shakas no longer control northwest India.

Births

• Gaius Caesar, grandson of Augustus Caesar (d. AD 4)
• Philo, the philosopher (approximate date) (d. AD 50)
• Sejanus, future advisor to Emperor Tiberius (d. AD 31)

Deaths

References

• Western Blacknose dace
• Western black widow
• Western Blue-eyed Grass
• Western Blue Flag
• Western Blue-tongued Lizard
• Western Boca
• Western Boca Raton
• Western Bohemian Fraternal Association
• Western Bolivian Guarani
• Western Bolivian Guaraní language
• Western boxing
• Western Box Turtle
• Western Boyaca Province
• Western Branch Elizabeth River
• Western Breach
• Western Breithorn
• Western Bridge and Construction Company
• Western Bridge Corporate Federal Credit Union
• Western Broad-Nosed Bat
• Western broad-toothed field mouse
• Western brook pond
• Western Brook Pond Fjord
• Western Brothers
• Western brown snake
• Western Bru language