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|485 by topic|
|Ab urbe condita||1238|
|Balinese saka calendar||406–407|
|Chinese calendar||甲子年 (Wood Rat)|
3181 or 3121
— to —
乙丑年 (Wood Ox)
3182 or 3122
|- Vikram Samvat||541–542|
|- Shaka Samvat||406–407|
|- Kali Yuga||3585–3586|
|Iranian calendar||137 BP – 136 BP|
|Islamic calendar||141 BH – 140 BH|
|Minguo calendar||1427 before ROC|
|Seleucid era||796/797 AG|
|Thai solar calendar||1027–1028|
611 or 230 or −542
— to —
612 or 231 or −541
Year 485 (CDLXXXV) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Memmius without colleague (or, less frequently, year 1238 Ab urbe condita). The denomination 485 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.
- Aelle of Sussex, king of the South Saxons, fights the Britons at the stream of Mercredesburne. The battle ends in a draw (according to the Anglo-Saxon Chronicle).
- Period of Arthur's "twelve battles", during which he gains reputation for invincibility (approximate date).
- Emperor Xiao Wen Di institutes an "equal-field" system of agriculture, assigning each peasant family about 19 acres (140 mu) of land, of which a small portion is to be kept permanently by the farmer and his family, with the rest reverting to the state upon his death or retirement. To make sure that the people supervise each other in implementing the new system, he divides the population into groups, with five families constituting a neighborhood (Jin), five neighborhoods a village (Ji), and five villages an association (tang) headed by a chief (chang). The land-reform system will discourage farmers from selling off their properties to large landholders and will be continued in essence for well over 1,000 years.
- Prince Kenzō succeeds his adoptive father Seinei, and becomes the 23rd emperor of Japan.
- Peter the Fuller, patriarch of Antioch, is condemned and excommunicated by a synod of Western bishops at Rome.
- Cassiodorus, Roman statesman and writer (approximate date)
- Samson of Dol, bishop and saint (approximate date)
- Theuderic I, king of the Franks (approximate date)
- Abraham of Clermont, abbot and saint (approximate date)
- Fincath mac Garrchu, king of Leinster (Ireland)
- April 17 – Proclus, Greek Neoplatonist philosopher (b. 412)
- Asclepigenia, Athenian philosopher and mystic (b. 430)