Year 529 (DXXIX) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Decius without colleague (or, less frequently, year 1282 Ab urbe condita). The denomination 529 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.
|Ab urbe condita||1282|
|Balinese saka calendar||450–451|
|Chinese calendar||戊申年 (Earth Monkey)|
3225 or 3165
— to —
己酉年 (Earth Rooster)
3226 or 3166
|- Vikram Samvat||585–586|
|- Shaka Samvat||450–451|
|- Kali Yuga||3629–3630|
|Iranian calendar||93 BP – 92 BP|
|Islamic calendar||96 BH – 95 BH|
|Minguo calendar||1383 before ROC|
|Seleucid era||840/841 AG|
|Thai solar calendar||1071–1072|
655 or 274 or −498
— to —
656 or 275 or −497
- April 7 – Emperor Justinian I issues the Codex Justinianus (Code of Civil Laws), reformulating Roman law in an effort to control his unruly people (see 532).
- The Samaritans revolt and are defeated; the Church of the Nativity is burnt down during the Rebellion.
- Queen Amalasuntha receives a delegation sent by a council of Gothic nobles urging that she have her son Athalaric, now 13, taught an education in the Roman tradition—not by elderly schoolmasters, but by men who will teach him to "ride, fence, and to be toughened, not to be turned into a bookworm".
- Al-Harith ibn Jabalah becomes the fifth king of the Ghassanids. He helps the Byzantines to suppress the wide-scale Samaritan Revolt.
- February 25 – K'an Joy Chitam I comes to power in the Maya city of Palenque, ending an interregnum of a little over four years.
- Rudravarman is granted investiture by China, as the first king of the fourth dynasty of Champa (modern Vietnam).
- The Academy, originally founded at Athens by Plato around 387 BC, closes down by order of Justinian I, on charges of un-Christian activity. Many of the school's professors emigrate to Persia and Syria.
- The Benedictine Order is established at Monte Cassino near Naples by Benedict of Nursia, who founds a monastery and formulates for his monks strict rules in the "Regula Benedicti".
- The Canons of the Council of Orange are established, approving the Augustinian doctrine of sin and grace over Pelagianism and Semi-Pelagianism, but without Augustine's absolute predestination.
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