20

This page is about the year 20 AD. For the actual number, see twenty.

20 is a year in the 1st century. It was a leap year starting on Monday of the Julian calendar. At the time, it was known as the Year of the Consulship of Marcus Valerius Messalla Barbatus and Cotta.

Millennium:	1st millennium
Centuries:	1st century BC – 1st century – 2nd century
Decades:	0s BC  0s  10s  – 20s –  30s  40s  50s
Years:	17 18 19 – 20 – 21 22 23

AD 20 in other calendars

Gregorian calendar	AD 20 XX
Ab urbe condita	773
Assyrian calendar	4770
Balinese saka calendar	N/A
Bengali calendar	−573
Berber calendar	970
Buddhist calendar	564
Burmese calendar	−618
Byzantine calendar	5528–5529
Chinese calendar	己卯年 (Earth Rabbit) 2716 or 2656     — to — 庚辰年 (Metal Dragon) 2717 or 2657
Coptic calendar	−264 – −263
Discordian calendar	1186
Ethiopian calendar	12–13
Hebrew calendar	3780–3781
Hindu calendars
- Vikram Samvat	76–77
- Shaka Samvat	N/A
- Kali Yuga	3120–3121
Holocene calendar	10020
Iranian calendar	602 BP – 601 BP
Islamic calendar	621 BH – 619 BH
Javanese calendar	N/A
Julian calendar	AD 20 XX
Korean calendar	2353
Minguo calendar	1892 before ROC 民前1892年
Nanakshahi calendar	−1448
Seleucid era	331/332 AG
Thai solar calendar	562–563
Tibetan calendar	阴土兔年 (female Earth-Rabbit) 146 or −235 or −1007     — to — 阳金龙年 (male Iron-Dragon) 147 or −234 or −1006

Events

• Tiberias is built on the Sea of Galilee by Herod Antipas.
• Galba is a Roman praetor.
• Marcus Valerius Messalla Barbatus becomes a consul.
• First year of Dihuang era of the Chinese Xin Dynasty.
• Philo defines philosophy as the maidservant of theology.

Deaths

• Gnaeus Calpurnius Piso, Roman statesman and governor of Syria (b. 44 BC)
• Vipsania Agrippina, wife of Gaius Asinius Gallus and former wife of Tiberius (b. 36 BC)