AD 420

"420 (year)" redirects here. For the year of the pre-Julian Roman calendar, see 420 BC.

Millennium:	1st millennium
Centuries:	4th century 5th century 6th century
Decades:	400s 410s 420s 430s 440s
Years:	417 418 419 420 421 422 423

420 in various calendars

Gregorian calendar	420 CDXX
Ab urbe condita	1173
Assyrian calendar	5170
Balinese saka calendar	341–342
Bengali calendar	−173
Berber calendar	1370
Buddhist calendar	964
Burmese calendar	−218
Byzantine calendar	5928–5929
Chinese calendar	己未年 (Earth Goat) 3117 or 2910     — to — 庚申年 (Metal Monkey) 3118 or 2911
Coptic calendar	136–137
Discordian calendar	1586
Ethiopian calendar	412–413
Hebrew calendar	4180–4181
Hindu calendars
- Vikram Samvat	476–477
- Shaka Samvat	341–342
- Kali Yuga	3520–3521
Holocene calendar	10420
Iranian calendar	202 BP – 201 BP
Islamic calendar	208 BH – 207 BH
Javanese calendar	304–305
Julian calendar	420 CDXX
Korean calendar	2753
Minguo calendar	1492 before ROC 民前1492年
Nanakshahi calendar	−1048
Seleucid era	731/732 AG
Thai solar calendar	962–963
Tibetan calendar	阴土羊年 (female Earth-Goat) 546 or 165 or −607     — to — 阳金猴年 (male Iron-Monkey) 547 or 166 or −606

Pharamond is lifted on the shield by the Franks, by Pierre Révoil, 1841, and Michel Philibert Genod, 1845

Year 420 (CDXX) was a leap year starting on Thursday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Theodosius and Constantius (or, less frequently, year 1173 Ab urbe condita). The denomination 420 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

• the Franks cross the Rhine and invade Northern Gaul. In Italia an army is prepared to campaign with Castinus as chief.

Persia

• Yazdegerd I dies after a 21-year reign, and is succeeded by his son Bahram V, who becomes head of the Persian Empire.
• Abdas, bishop of Susa, is accused of burning down one of the fire temples of Ahura Mazda, and after refusing to rebuild it, he is executed, under orders of Shah Yazdegerd I.

Asia

• July 10 – The Jin Dynasty ends in China. Liu Yu (Emperor Wu of Liu Song) becomes the first ruler of the Liu Song Dynasty. Nanjing is reinstated as the capital of northern China.
• The Southern Dynasties begin in China.
• Guisin becomes king of the Korean kingdom of Baekje.
• The Gupta Empire reaches its peak territorial extent under Chandragupta II and his son Kumaragupta I.

Births

• Anthemius, emperor of the Western Roman Empire
• Ecdicius, Roman general (magister militum)
• Libius Severus, emperor of the Western Roman Empire
• Majorian, emperor of the Western Roman Empire
• Palladius, caesar and son of Petronius Maximus
• Valamir, king of the Ostrogoths (he is also thought to have been born in 425 AD)
• Yuan Can, high official of the Liu Song Dynasty (d. 477)

Deaths

• January 21 – Yazdegerd I, king of the Sassanid Empire
• February 26 – Saint Porphyry, bishop of Gaza (Palestine)
• September 30 – Saint Jerome, priest and translator of the Bible
• Saint Abdas, bishop of Susa (Iran)
• Li Xin, duke of the Chinese state Western Liang
• Orosius, Christian historian and theologian (approximate date)
• Pelagius, British monk (approximate date)
• Yao, empress consort and wife of Mingyuan