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Millennium: 1st millennium
265 in various calendars
Gregorian calendar265
Ab urbe condita1018
Assyrian calendar5015
Balinese saka calendar186–187
Bengali calendar−328
Berber calendar1215
Buddhist calendar809
Burmese calendar−373
Byzantine calendar5773–5774
Chinese calendar甲申年 (Wood Monkey)
2962 or 2755
    — to —
乙酉年 (Wood Rooster)
2963 or 2756
Coptic calendar−19 – −18
Discordian calendar1431
Ethiopian calendar257–258
Hebrew calendar4025–4026
Hindu calendars
 - Vikram Samvat321–322
 - Shaka Samvat186–187
 - Kali Yuga3365–3366
Holocene calendar10265
Iranian calendar357 BP – 356 BP
Islamic calendar368 BH – 367 BH
Javanese calendar144–145
Julian calendar265
Korean calendar2598
Minguo calendar1647 before ROC
Nanakshahi calendar−1203
Seleucid era576/577 AG
Thai solar calendar807–808
Tibetan calendar阳木猴年
(male Wood-Monkey)
391 or 10 or −762
    — to —
(female Wood-Rooster)
392 or 11 or −761
Aureus of Postumus, within a pendant

Year 265 (CCLXV) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Valerianus and Lucillus (or, less frequently, year 1018 Ab urbe condita). The denomination 265 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.



By place


Roman Empire

  • Emperor Gallienus tries twice to crush the usurper Postumus, but on the first occasion Aureolus, commander of the elite cavalry, carelessly lets him escape. The second time, Gallienus sustains an arrow wound and has to break off his siege of a Gallic town where Postumus has holed up. He makes no other serious attempt to overcome his rival, instead devoting his attention to the political and military problems in the Danube and eastern parts of the Roman Empire.
  • Postumus makes no move to march on Rome and claim his territory south of Gaul.
  • Gallienus gives the order to fortify Milan and Verona.
  • Gallienus repels the invasion of the Goths in the Balkans.
  • A general of Gallienus' army, Victorinus, defects to Postumus.


  • Sima Zhao, who had been the regent and de facto primary authority of the state of Cao Wei for little over 10 years by this point, passes away, leaving his authority to his eldest son, Sima Yan, who will go on to disestablish the state of Cao Wei in 266, founding the Jin dynasty.






  1. ^ "St. Dionysius of Alexandria". Encyclopaedia Britannica. Retrieved February 19, 2024.