120

Millennium:	1st millennium
Centuries:	1st century – 2nd century – 3rd century
Decades:	90s  100s  110s  – 120s –  130s  140s  150s
Years:	117 118 119 – 120 – 121 122 123

Year 120 (CXX) was a leap year starting on Sunday of the Julian calendar.

Roman Empire

• Emperor Hadrian visits Britain.
• Foss Dyke is constructed in Britain.
• An Indian ambassadorial contingent visits with Hadrian.
• Suetonius becomes Hadrian's secretary ab epistolis.
• Market Gate of Miletus, from Miletos, is built. (approximate date) It is now kept at Staatliche Museen zu Berlin, Preussischer Kulturbesitz, Antikensammlung.

Asia

• Change of era name from Yuanchu (7th year) to Yongning of the Chinese Eastern Han Dynasty.
• The Scythians dominate western India: Punjab, Sind, the north of Gujerat and a portion of central India.

Births

• February 8 – Vettius Valens, Hellenistic astrologer
• Irenaeus, Christian bishop and apologist
• Lucian, Syrian rhetorician and satirist, writing in the Greek language

Deaths

for more information, see Category:120 deaths.

• Dio Chrysostom, Greek historian
• Nicomachus of Gerasa, Greek mathematician (approx. date)
• Sextus Pedius, Roman jurist
• Saint Matthias of Jerusalem, Bishop of Jerusalem
• Marcian of Tortona (or in 117), martyred saint
• Getulius, Saint Hermes, martyred saints