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